Lot size table
The lot size for every stop and risk, on one printable page.
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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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Your trade
The answer
Trade 1.50 lots. If the stop is hit you lose about $499.50 (0.50% of the account).
- Stop distance
- 3.33 in price (33.3 pips)
- Your risk budget
- $500.00
- Loss per 1.00 lot at the stop
- $333.00
- What the limits can take
- 11 losing trades like this in a row reach the daily loss limit of 5%. 21 reach the maximum loss of 10%.
- 2 losses in a row$999.00
- 3 losses in a row$1,498.50
- 4 losses in a row$1,998.00
- 5 losses in a row$2,497.50
- 6 losses in a row$2,997.00
- 7 losses in a row$3,496.50
- 8 losses in a row$3,996.00
- 9 losses in a row$4,495.50
- 10 losses in a row$4,995.00
Lots are rounded down to 0.01. The stop is not guaranteed: in fast markets and over weekends the price can jump past it, and spread is not included. Contract sizes are the common MetaTrader ones (gold 100 oz, currencies 100,000, indices 1 per point); check the symbol specification at your broker.
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
- 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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Baroq never holds your money and never trades for you. Educational only, not financial advice; trading involves risk.