Lot Size Calculator

How the calculation works

Everything is computed in your browser from the numbers you enter. There is no server, no login and no data sent anywhere.

1. Risk amount = account balance × risk percentage. With a 10,000 USD account at 1%, your risk is 100 USD.
2. Pip value per lot = pip size × contract size, converted into your account currency. On EURUSD that is 0.0001 × 100,000 = 10 USD per pip for one standard lot.
3. Stop loss in money = stop loss in pips × pip value per lot. A 20 pip stop on EURUSD costs 200 USD per standard lot.
4. Lot size = risk amount ÷ stop loss in money. 100 USD ÷ 200 USD = 0.50 lots.
5. Position size = lot size × contract size. 0.50 × 100,000 = 50,000 units.
6. Margin required = position value ÷ leverage. 50,000 units at 1.1000 is 55,000 USD of exposure, so at 1:100 you need 550 USD of margin.
7. Risk / reward = distance to your target ÷ distance to your stop, both measured as price moves.

Rounding: lot size is shown to two decimals. Most brokers accept 0.01 lots (micro), some accept 0.001 — round down if your broker requires it, and never round up. If the distance is the part you are working from rather than the pip count, the forex stop loss calculator takes your entry and stop price and measures it for you.

If the ratio is the part you came for, the risk reward calculator takes your entry, stop and target and returns the risk to reward ratio, the win rate you need to break even at that ratio, both distances in pips and a table of the two from 1:1 to 1:5.

Once the size is set, the other direction of the same arithmetic is what the trade earns: the forex profit calculator takes that lot size and turns it into a profit figure in your own currency, with the spread, the commission and the overnight financing taken off. What the same size grows into across a run of trades, if you work it out again from the balance each time instead of holding it constant, is what the forex compounding calculator is for. What a run of losses does to the balance under different sizing rules, and how much gain each fall requires to get back, is on the drawdown calculator.

How to calculate lot size in forex

Everything here is the same five steps as above, written against the way the question is usually asked. One equation runs through all of them: lot size = risk budget ÷ (stop in pips × pip value per lot). What changes from question to question is which of those four numbers you already have in your hand.

How do I calculate lot size in forex?

Take a 10,000 USD account risking 1% with a 25 pip stop on EURUSD at 1.1000:

1. The budget. 10,000 × 1% = 100.00 USD. That is the most this trade may lose.
2. What one pip costs. Pip size × contract size: 0.0001 × 100,000 = 10.00 USD per pip for one whole lot.
3. What your stop costs. 25 pips × 10.00 USD = 250.00 USD per lot. As a price move that same stop is 0.0025.
4. Divide. 100.00 ÷ 250.00 = 0.40 lots — 40,000 units, about 44,000.00 USD of exposure.
5. Check it fits. At 1:100 that needs 440.00 USD of margin, and one pip of movement on the position is worth 4.00 USD.

The same 100.00 USD budget lands on three different answers, because "one pip" is not the same thing on three instruments:

How do I calculate lot size by hand?

One line, four numbers:

lot size = (balance × risk %) ÷ (stop in pips × pip size × contract size × conversion rate)

The division is not the part people get wrong. Two other things are. First, the four numbers are in three different units: the budget is in your account currency, the stop is in pips, the pip value comes out in the quote currency, and the conversion rate is the only bridge between them. Miss the rate and every figure after it is in the wrong currency. Second, the answer is a continuous number and your platform only takes discrete ones — so the arithmetic is not finished until you have checked whether the number it produced is one you can actually enter.

How do I calculate lot size from a stop price instead of a pip count?

Measure the distance first, then run the same equation. On USDJPY at 160.00 with your stop at 159.20, the distance is 0.80 of price. On a JPY pair a pip is the second decimal, so 0.80 ÷ 0.01 = 80 pips. On EURUSD the same 0.80 of price would be 8,000 pips, and sizing off that number would be wrong by a hundredfold — this is the single most common way a hand calculation goes wrong.

With the same 100.00 USD budget: one pip costs 6.25 USD per lot here, so a lot risks 80 × 6.25 = 500.00 USD, and 100.00 ÷ 500.00 = 0.20 lots — 20,000 units, about 20,000.00 USD of exposure, 200.00 USD of margin at 1:100, and 1.25 USD per pip of movement. If the distance is what you have rather than the pip count, the forex stop loss calculator takes your entry and stop price and measures it, including the JPY convention.

Does leverage change the lot size?

No. Leverage is nowhere in the equation, and that is why it is the most searched-for variable that does not belong in the calculation. The 0.40 lots above is 0.40 lots at 1:30, at 1:100 and at 1:500 alike. What leverage changes is the margin: 1,466.67 USD at 1:30, 440.00 USD at 1:100, 88.00 USD at 1:500, all for the same position. One is a rate, the other is an amount it produces — the margin vs leverage section on the margin page puts the two on the same trade.

So the order matters: size the trade from your stop first, then ask whether that size fits in your margin. Sizing with leverage answers a different question — how large a position your account can carry — and a position sized that way has no relationship to the distance you are willing to let price travel. The forex margin calculator answers the second question, and measures how far price can run before the platform closes the position for you.

How do I calculate lot size for gold?

The same equation, with gold's own pip size and contract size. At 2,000.00 with a stop 10.00 dollars per ounce lower, that distance is 1,000 pips at gold's 0.01 pip size. One pip costs 1.00 USD per lot, so a lot risks 1,000.00 USD, and 100.00 ÷ 1,000.00 = 0.10 lots — about 20,000.00 USD of exposure, 200.00 USD of margin at 1:100. One pip of movement is worth 0.10 USD on that position, which is another way of saying one dollar of movement in the gold price is worth 10.00 USD on it.

Gold is also where the pip convention itself splits in two, so the XAUUSD pip calculator shows both definitions in circulation and sizes a position from a stop measured in dollars per ounce.

How do I calculate lot size in MT4 or MT5?

Exactly as above, and the number goes into the same place: the Volume field of the order window, which is in lots. Two things the field does that the arithmetic does not. It only accepts the sizes on the symbol's volume step, so 0.40 may be fine while 0.125 is not; and it will not go below the symbol's minimum, whatever your calculation says. Neither of those is visible in the equation — both live in your platform's symbol specification. The MT4 lot size calculator brings the result down onto that step and says so when the minimum is the thing blocking the trade.

How do I calculate lot size and pips in forex?

Pips are the measuring stick, not the answer. The stick differs by pair — 0.0001 on EURUSD, 0.01 on any JPY pair, 0.01 on metals at two decimals — and a pip is always 10 points, which matters because a platform quoting five decimals usually calls the fifth digit a pip when it is a point. The pip calculator returns the value of one pip in your own currency for any pair and lot size. Run the same arithmetic the other way and it turns a pip count into money — pips to dollars — which takes three inputs you may not have realised you were supplying: the instrument, the lot size and your account currency.

How do I calculate profit in forex with lot size?

Run the same pip value the other way: pips gained × pip value per lot × your lot size. What that figure is not is what lands in the account — the spread you crossed on entry, the commission and any overnight financing come off it, so the trade has to travel further than the entry price before it is ahead. The forex profit calculator takes the lot size and returns the profit in your own currency with those costs taken off, and says how many pips it takes to reach break even.

What if the answer is smaller than the smallest lot my broker allows?

Then the calculation has done its job, and the honest reading is that this trade does not fit. On a 1,000 USD account risking 1%, the budget is 10.00 USD. With a 250 pip stop on EURUSD, one lot risks 2,500.00 USD, so the exact answer is 0.004 lots — below one micro lot, and this page shows it as 0.00 lots.

Do not round it up. One micro lot puts 25.00 USD behind a 250 pip stop, which is 2.50% of the account against a 1% budget — two and a half times the risk you had decided on. The three ways out are a wider risk percentage, a tighter stop, or no trade: at a 100 pip stop the same 10.00 USD budget lands exactly on 0.01 lots, and the whole budget is spent and nothing more.

What this page does not assume while you work it out

• No broker's contract size or pip convention. The 100,000 units, the 0.0001, the 0.01 on JPY pairs and on metals are the standard convention, not a reading of your account. If your broker's specification differs, the by-hand answer differs with it.
• No conversion rate you did not enter. When your account currency matches the quote currency, or the base currency, the rate is derived. When it matches neither, the rate field is yours to fill — and a rate of 1 gives you an estimate, not a usable number.
• No volume step and no minimum lot. This page does not know them, so the two-decimal lot size it shows is a rounded display of a number, not a size you can necessarily enter.
• No judgement on whether the size fits your margin. Required margin is arithmetic on the leverage you picked; whether you have the free margin for it is a different question.
• No costs in the size. Spread, commission and overnight financing change what the trade earns. They do not change the size you pick, which is why they are not in this equation.

What a lot is, and what one costs

A lot is a unit of measurement, not a recommendation. It is the quantity an instrument is traded in, and everything this page does is arithmetic on that one number: how many units it is, what one pip of movement is worth at that size, and what the platform holds from you while the position is open.

What is lot size in forex?

The size of the trade, written in lots. One standard lot is 100,000 units of the base currency — the first currency in the pair — and every smaller size is a fraction of it. At 0.40 lots on EURUSD you hold 40,000 euros, not 40,000 dollars and not 100,000 of anything.

Which is why 0.40 is not a cautious version of 1.00. It is a measurement that came out of an equation, and the equation took your stop distance and your risk budget as its inputs. The size that is correct on a tight stop is the wrong size on a wide one, so a number is only ever small or large relative to the stop it belongs to.

How many units is 1 lot in forex?

100,000 units of the base currency. Not of your account currency, and not of dollars — which is the reason "1 lot size in forex in usd" does not have a single answer:

Three of those four are currency, and only two of them need converting: on EURUSD and GBPUSD the base currency is not dollars, so the dollar figure moves with the price. On USDJPY the base currency already is dollars, so nothing is converted. On gold the unit is not currency at all, which is why 100,000 appears nowhere in that row.

What is 0.01 lot size in dollars?

Three questions wear that one wording, and they have three different answers for the same position. On EURUSD at 1.1000 with a USD account:

• How much of the pair you control: 1,100.00 USD. That is 1,000 euros — 0.01 of 100,000 — converted at the price. This is notional exposure, and it is not money you have spent.
• What one pip of movement is worth: 0.10 USD. Pip size times contract size times the lot size. This is the figure that decides what a stop costs, and it is the one most people are asking for.
• What the platform holds while it is open: 11.00 USD at 1:100. The notional divided by the leverage. A deposit rather than a cost, and the only one of the three that changes when your leverage does.

1,100.00, 0.10 and 11.00 — the same 0.01 lot, three different questions, three answers that are not interchangeable. None of them is what the trade earns: that depends on how far price travels, and the forex profit calculator is the page that takes a lot size and a distance and turns them into money.

What is the difference between a standard, a mini and a micro lot?

Only the number differs. The names are shorthand for the fractions below, and they are not a setting anywhere: MT4 and MT5 have one Volume field and it takes a number, so placing a micro lot is typing 0.01 into it.

Two things about that table. The names are the part your platform does not use, so the number is the thing worth remembering. And 0.001 is not universal — most symbols stop at 0.01, and the MT4 lot size calculator reads the step and the minimum off your symbol and says which of the two is what actually blocks the trade. This page shows lot size to two decimals, which is why 0.001 displays here as 0.00: the arithmetic underneath is not rounded, the display is.

The same 1.00 is also not the same quantity on every account type. On a cent account one lot is 1,000 units rather than 100,000, so a figure carried from one account type to the other is out by a hundredfold. The pip calculator carries account type as a field for exactly that reason.

What lot size is good for a $100 forex account?

There is no such size, and that is not a refusal to answer. Lot size is not derived from your balance — it is derived from your balance, your risk percentage and your stop distance together, which is the same equation running through everything above. A table that tells you to use 0.01 on a 100.00 USD account has already picked a stop distance for you, quietly, and did not say which one.

What you can work out is the reverse: at the smallest size your platform takes, how much room does your stop have. On EURUSD with a USD account, one micro lot costs 0.10 USD per pip:

The first row says more than a recommended lot size would. On a 100.00 USD account risking 1%, the smallest size available leaves you a ten pip stop — and at ten pips the calculator above returns exactly 0.01 lots, which is what it gives for those inputs. Widen the stop past ten pips and the exact answer drops below the smallest size you can enter.

The three ways out are the three variables, and this page does not choose between them: a wider risk percentage, a wider account, or a stop far enough away that the pair does not touch it on the way. What this calculator will not do is round 0.004 up to 0.01 on your behalf, which is the one move that turns a 1% risk into two and a half times that.

That is the same arithmetic running against every other balance people ask about — 500, 1,000, 5k, 10k, 25k, 50k, 100k — and the sizes come out in What lot size should you use on your account below, laid out across three stop distances rather than down one of them.

What this page does not assume about lot sizes

• No contract size for your account. 100,000 units to the standard lot is the convention on a standard account. A cent account puts 1,000 units behind the same 1.00.
• No nano lot. 0.001 is in the table because some symbols take it. Whether yours does lives in your platform's symbol specification, not on this page.
• No minimum lot and no step as a default. 0.01 is the common minimum, not a universal one, and the two-decimal size shown here is a display rather than a size you can necessarily enter.
• No stop distance for you. That is why there is no recommended size for an account balance anywhere on this page. A size without a stop distance is not an answer.
• No cost inside the size. Spread, commission and overnight financing change what a trade earns. They do not change the size, so they are not in this equation.

What lot size should you use on your account

The question arrives with a number already attached — what lot size should I use with 100, with 500, with 1000, on a 5k account, for 10k, on a 25k account, on a 50k account, for a 100k account. That number is one of four inputs, and it is the only one of the four a table can fill in for you. The other three — the percentage you risk, the distance to your stop, and the instrument — are yours, and two of them move the answer more than the balance does.

Here is the whole cluster on one table. EURUSD at 1.1000, a USD account, 1% risk, leverage 1:100. Every cell is the output of the calculator above:

Read down one column and the table is doing nothing interesting: the size scales with the account, so the 50k answer is always ten times the 5k answer. Read across one row and the interesting part appears — the same account moves through a factor of four between a tight stop and a wide one. The stop distance and the balance are the same kind of input to this equation, and the balance is not the stronger of the two.

*One cell is worth a word of warning. On a 500.00 USD account with a 100 pip stop the exact answer is 0.005 lots, and this page displays it as 0.01 because the display is two decimals. That rounding is the one move this page will not make for you: 0.01 lot behind a 100 pip stop risks 10.00 USD, which is 2.00% of the account against a 1% budget. Where the exact answer falls under the smallest size you can enter, the honest reading is that the trade does not fit — not that it fits at double the risk.

What lot size should I use with 1,000?

At 1% the budget is 10.00 USD. One pip costs 10.00 USD per whole lot on EURUSD, so a 25 pip stop costs 250.00 USD per lot and 10.00 divided by 250.00 is 0.04 lots — 4,000 units, about 4,400.00 USD of exposure, 44.00 USD of margin at 1:100, and 0.40 USD for every pip the position moves. At a 100 pip stop the same budget lands on 0.01 lots: 1,000 units, 1,100.00 USD of exposure, 11.00 USD of margin, 0.10 USD per pip.

Those two are the same trade on the same account and they differ by a factor of four. Which of them is right is decided by where your stop is, which is decided by your chart — not by the balance, which is why a one thousand dollar account does not have a lot size.

What lot size should I use on a 50k account?

500.00 USD at 1%. With a 25 pip stop, one lot risks 250.00 USD, so the answer is 2.00 lots — 200,000 units, about 220,000.00 USD of exposure, 2,200.00 USD of margin at 1:100, and 20.00 USD per pip of movement. At a 100 pip stop it is 0.50 lots: 50,000 units, 55,000.00 USD of exposure, 550.00 USD of margin, 5.00 USD per pip.

Fifty thousand is also the first row where the answer is worth checking against the deposit. At 2.00 lots the required margin at 1:30 is 7,333.33 USD rather than 2,200.00 USD — still comfortably inside the account, but no longer a figure you can ignore when other positions are open.

What lot size should I use for a 100k account?

1,000.00 USD at 1%, and the arithmetic is unchanged: 4.00 lots at a 25 pip stop — 400,000 units, about 440,000.00 USD of exposure, 4,400.00 USD of margin at 1:100 — and 1.00 lot at a 100 pip stop: 100,000 units, 110,000.00 USD of exposure, 1,100.00 USD of margin.

What changes at this end is not the equation but what blocks it. At 4.00 lots the deposit at 1:30 is 14,666.67 USD, and a second position of the same size alongside the first starts competing with it for the same free margin. The size is still right; the question has become whether the account carries it, which is a margin question rather than a sizing one — and that is what the forex margin calculator answers, including how far price can travel before the platform closes the position for you.

Where the answer stops being a number: the minimum lot

Below a certain balance the equation still returns a number, and the number is not one you can enter. Most symbols stop at 0.01 lots, and one micro lot on EURUSD costs 0.10 USD per pip — so the balance at which the smallest available size stops exceeding a 1% budget is purely a function of your stop:

That is the line the top rows of the first table sit on the wrong side of. A 100.00 USD account does not have a lot size at a 25 pip stop: the smallest size you can enter risks 2.50 USD, which is 2.50% of it. The three ways out are the three variables — a wider risk percentage, a tighter stop, or a bigger account — and this page does not choose between them. What it will not do is round 0.004 up to 0.01, which is the one move that turns a 1% risk into two and a half times that.

Where leverage never becomes the answer

Leverage is not in the equation, and it is worth saying what that costs you. Sizing from the deposit instead of the stop produces a size with no relationship to the distance you are willing to let price travel, and the deposit only becomes the thing that limits you once the stop is tighter than the figures below — EURUSD at 1.1000, a 10,000.00 USD account:

Read it this way: risking 5% with a 5 pip stop at 1:100, the size the equation gives you is 10.00 lots, and that needs 11,000.00 USD of margin on a 10,000.00 USD account — the order is refused, and it is refused by the deposit rather than by your budget. Widen the stop to 6 pips and the same budget gives 8.33 lots and 9,166.67 USD of margin, which fits. At a 1% budget the same wall sits below 1.10 pips, which is not a distance most people plan. So across most of this table the leverage is not what limits you: the minimum lot is, at the small end, and in the middle nothing is.

What this section does not pick for you

• No risk percentage. Every figure above is at 1% because 1% is a common number, not a recommended one. At 2% every size doubles and every balance in the minimum-lot table halves.
• No stop distance. That is the input the whole answer turns on, and it comes from your chart. A size without one is not an answer, which is why the first table is laid out across stop distances rather than down one of them.
• No minimum lot, no volume step and no maximum volume. 0.01 is the common floor and is not universal, and the step decides which sizes are enterable at all. The MT4 lot size calculator reads both off your symbol and says which of them is what blocks the trade.
• No account type. Everything here is a standard account. On a cent account one lot is 1,000 units rather than 100,000, so every size above is out by a hundredfold.
• No instrument other than EURUSD at 1.1000. One pip is 10.00 USD there. On a JPY pair, on gold or on silver it is a different number, and the size moves with it.

Pips and points — the part most calculators get wrong

A pip is not a fixed number of decimals across all instruments. It follows the quoting convention:

• On 4-decimal pairs such as EURUSD, 1 pip = 0.0001 and 1 point = 0.00001.
• On JPY-quoted pairs such as USDJPY, 1 pip = 0.01 — the second decimal, not the fourth.
• On metals at 2-decimal quotes, 1 pip = 0.01 of price.
• 1 pip is always 10 points. Brokers that quote 5 decimals usually mean points when they say "pip" on the 5th digit.

This page shows the pip definition for the instrument you picked, directly under the stop loss field, and converts your stop into an actual price move so you can check it against your chart.

Gold is where that convention splits into two, so it has a page of its own: the XAUUSD pip calculator shows both pip definitions in circulation for gold and sizes a position from a stop measured in dollars per ounce.

Supported instruments

Forex majors and crosses (28 pairs) plus gold (XAUUSD) and silver (XAGUSD). Contract sizes follow the standard industry convention:

• Forex: 1 standard lot = 100,000 units of the base currency.
• Gold: 1 standard lot = 100 troy ounces.
• Silver: 1 standard lot = 5,000 troy ounces.

Index CFDs (US30, NAS100, SPX500 and similar) are not included on purpose. Their contract size and point value differ from broker to broker, so any number printed here would be a guess. Check your broker's contract specification instead.

The US30 pip calculator covers those instead. It asks what one index point is worth per lot rather than assuming a contract size, so it can size US30, NAS100 and the rest without the guess. It also works out what one lot of an index is worth at the level it is trading at, because on an index the exposure behind a lot moves with the level while the money one point moves does not.

Crypto pairs are left out here for the same reason, and the BTCUSD pip calculator covers them the same way — asking what one dollar of price movement is worth per lot, so a crypto position can be sized without knowing how much coin the broker puts behind a lot.

Crypto CFDs also keep their own quoting hours rather than the currency week's. If you are checking whether anything is trading at all right now, the forex market hours page works out which session is running on your own clock.

Futures, stocks and options — the same equation, a different unit

Every line above is one equation: size = risk budget / what one unit of size risks. The equation does not change between instrument types. The unit does, and that is why the fields on this page stop at forex and metals.

Futures — what lot size means there

In futures there is no lot. You count contracts, and one contract risks your stop in ticks, times the value of one tick. Both of those belong to the contract you are trading and to the exchange it is listed on. An index contract, a gold contract and the micro version of either are separate contracts with separate tick values, so there is no default this page could print without inventing one. Read the multiplier and the tick value from the exchange contract specification, or from the symbol details in your platform, then use the equation above.

What you get for that is a coarser ruler than forex has. Take the same 10,000 USD account risking 1%, so a 100.00 USD budget, on a contract whose spec says one tick is worth 5 USD, with a 12 tick stop:

• One contract risks 12 ticks of 5 USD = 60.00 USD, which is 60.00% of the budget.
• Two contracts risk 120.00 USD, which is 120.00% of it.
• The exact fit is 1.6667 contracts, and you cannot enter that. The choice is 60.00% or 120.00%, and 40.00 USD of the budget goes unused.

Forex lots run into the same wall at the bottom end, where the volume step or the minimum lot is what actually blocks the trade. The MT4 lot size calculator brings the size down onto that step and says so when the minimum is the thing in the way.

Stocks — shares, and no multiplier

A share risks the distance between your entry and your stop, in the share's own currency. There is no pip, no contract multiplier and no lot. With the same 100.00 USD budget, an entry at 50.00 and a stop at 47.75, one share risks 2.25 USD:

• The exact fit is 44.4444 shares.
• In whole shares, 44 risks 99.00 USD, which is 99.00% of the budget.
• 45 shares risks 101.25 USD, which is 101.25% of it, and that is over.

Round down. Whether 44.4444 shares is enterable at all depends on whether your broker offers fractional shares, which is not something this page knows.

Options — for a buyer, the premium is the risk

For the buyer of an option the stop distance is not the sizing variable. The most a long option can lose is the premium paid, so the question is how much premium fits inside the budget. With the same 100.00 USD and a contract costing 250.00 USD of premium, no contract fits: one contract is already 250.00% of the budget. Options come with a minimum ticket of one contract, and on a small account that ticket is often the thing that says no.

For the seller the opposite is true. The loss on a short option is not capped at the premium, so the line above does not apply, and neither does any stop-distance sizing on this page.

What this page does not assume about them

• No contract multiplier, tick value or margin for any futures contract. They differ per contract and per exchange, and this page has no source for them.
• No conversion between your account currency and the contract or share currency. Outside forex the rate applies to the margin as well as to the result, and it moves while the trade is open.
• No comparison between a forex overnight swap and a futures expiry. One is a financing charge, the other is a date on which the position stops existing. They are not the same decision.
• No pricing model for options. Nothing here touches the greeks, implied volatility or time decay.
• No micro-contract shortcut. The micro version of a contract carries its own multiplier. Read it rather than assuming it is a tenth of the standard one.

Where the prices come from

You enter them. This page has no live market feed — it does not fetch prices, and it will never show a price it did not get from you. Open your broker's platform, copy the current bid/ask for the pair you are trading, and paste it into the entry price field.

The same applies to currency conversion. If your account currency matches the quote currency, or matches the base currency, the rate is derived automatically. If neither matches — for example a USD account trading EURGBP — the conversion rate field appears and you fill it in yourself. Leaving it at 1 will give you an estimate, not a usable number.

Common questions

Is this the same as a position size calculator?

Yes. A position size calculator and a lot size calculator answer the same question: how big should this trade be. Lot size is the forex-specific way of expressing position size, which is why both names are used for this tool.

Does it work as a forex lot size calculator for any pair?

For the 28 pairs listed, yes. Pick the pair, enter your stop in pips and the pip value is calculated from that pair's own quoting convention, including JPY pairs where a pip sits on the second decimal.

Does it work as a position size calculator for futures?

Not on this page. Futures are sized in contracts, and each contract carries its own tick value in the exchange specification, so no default holds across them. The section above gives the equation and says where to read the two numbers it needs.

What is lot size in futures?

The number of contracts. There is no lot: the contract is the unit, and how much it represents is fixed by the exchange rather than chosen by you. So "lot size" on an index or gold futures contract means how many of those contracts you are putting on.

Can I use it for stocks or options?

Neither one fits these fields. Stocks are sized in shares, where one share risks the distance between your entry and your stop, with no pip and no multiplier in the arithmetic. For a bought option the premium is the risk. Both are worked through above. The stock average down calculator is the page for when you already hold the stock and want to know what a second buy does to the cost basis, including the share of the gap that closes and what the position is worth at the current price.

What is 1 lot size in forex?

One standard lot is 100,000 units of the base currency, and that is a unit of measurement, not a recommendation. It is what "1.00" in the result means: at 0.40 lots on EURUSD you are holding 40,000 units, not 100,000. Most accounts trade in fractions of it — 0.10, 0.01 or smaller — because a whole lot puts 10.00 USD behind every pip on that pair, and few stops are short enough for that to fit inside a 1% budget. On gold a lot is 100 troy ounces and on silver 5,000, so "1.00" is not the same quantity of metal as it is of currency.

What is 0.01 lot size in dollars?

On EURUSD at 1.1000 with a USD account it is three figures, and which one you want depends on the question: 1,100.00 USD of notional exposure, 0.10 USD per pip of movement, and 11.00 USD of margin held at 1:100. The section above works all three out, and says why a single dollar figure for a lot size cannot exist.

How is this different from a forex position size calculator that asks for a stop price?

Some tools ask you to type the stop loss price and work backwards. This one asks for the distance in pips, which is how most traders plan a trade from a chart. Either method gives the same answer as long as the pip definition matches — that is exactly why the pip/point conversion is printed on this page.

Why is the lot size sometimes below 0.01?

Because your stop is wide relative to your risk. A 200 pip stop on a small account risks too much per lot, so the correct position is smaller than the minimum your broker allows. Either widen your risk percentage, tighten the stop, or skip the trade — do not round the lot size up.

That minimum is not the same everywhere. MT4 and MT5 read it from the symbol's own specification, alongside a volume step that decides which sizes are enterable at all. The MT4 lot size calculator brings the result down onto that step and flags when the minimum is what is actually blocking the trade.

Does leverage change how much I risk?

No. Leverage only changes the margin required. Your risk is set by account size, risk percentage and stop distance. This is why the risk amount and the margin required are shown as two separate numbers.

What leverage does change is how far price can travel before the platform closes the position for you. The forex margin calculator measures that distance in pips and puts it next to the stop you planned.

Can I use it on my phone?

Yes. The layout collapses to a single column on narrow screens and every input is a native number field, so the numeric keypad comes up on mobile.

How much is one pip worth on any pair?

The pip calculator answers that directly. Pick a pair, enter your account currency and the lot size, and it returns the pip value in your currency and the total for any number of pips. It applies the same pip size and contract size conventions this page does, just on its own without the rest of the position sizing fields.