Free risk tools

Position size calculator

Decide the loss first, then the size. Type in your account, how much of it one trade may lose, and where your stop is.

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Nothing you type is stored

Your trade

Instrument

Account balanceIn your account's currency.

Account currency

US dollars for 1 unit of itEURUSD for a euro account, GBPUSD for pounds. Leave it empty for a typical rate; ignored for US dollars.

Risk per trade (% of the account)A common range is 0.25% to 1%.

Entry price

Stop-loss priceOr leave it empty and use the volatility stop below.

Average true range, ATR (optional)From your chart's ATR(14). The stop goes this many ATRs from the entry:

Stop distance in ATRsCommonly 1.5 to 3.

Commission per lot, round trip (US dollars)

Daily loss limit (%)0 if your account has none.

Maximum loss (%)

The answer

Fill in the entry and stop prices and press the button.

Education only, not investment advice. The answer comes from the numbers you typed in, not from your account or the market. Simulated results are hypothetical and have limits: real trading has slippage, gaps, changing results and emotions. Trading leveraged products can lose money quickly, including all of it. Risk warning

Educational only, not financial advice; trading involves risk.

How the size is worked out

An example on gold: a $10,000 account, 1% risk per trade, a buy at 4,000 with the stop at 3,980.

Risk budget$10,000 x 1% = $100.00
Stop distance4,000 - 3,980 = 20
Loss per lot20 x 100 oz = $2,000.00
Size$100.00 / $2,000.00 = 0.05 lots

The example, step by step: each number is made from the one before it.

Risk budget = balance x risk per trade: $10,000 x 1% = $100.00.
Stop distance = entry minus stop: 4,000 - 3,980 = 20.
Loss per lot = stop distance x contract size: 20 x 100 ounces = $2,000.00.
Size = risk budget / loss per lot, rounded down to 0.01: $100.00 / $2,000.00 = 0.05 lots.

Put this example in the calculator. A wider stop gives a smaller size for the same money at risk, which is the whole point: the stop goes where the trade idea is wrong, and the size follows from it. Tied to one lot size? The stop loss calculator works it the other way round.

Currencies work the same way with 100,000 units to a lot, so a 0.0020 move on EURUSD is $200 per lot. When the US dollar comes first (USDJPY, USDCAD, USDCHF) the move is in the other currency, and the calculator divides by the price to turn it into dollars.

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