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Position size calculator

The right position size is worked out before you open the chart. Account, risk, stop: the calculator gives you the number of contracts and what each scenario costs you or earns you.

Risk mode

Result

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Target risk
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Actual risk (rounded)
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Risk per contract
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Stop value
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R targets

TargetDistance (points)Potential gainAccount after

1R = the distance to your stop. Aiming for at least 2R per trade lets you be profitable with fewer than one winning trade in two.

The calculator always rounds down: better to risk a little less than planned than a little more. In a prop firm, keep a margin on the daily limit: a day with 3 stop-outs happens more often than you would think.