Futures position calculator
Start from the risk you accept, not the leverage you fancy. This sizes the position so that if the stop is hit you lose exactly that much and no more.
Result
Enter a balance, an entry price and a stop loss to see the result.
Calculator for specific symbols
Every symbol we have actually traded has its own page, showing that symbol's record — with the trade count, not just a percentage.
Frequently asked
How is the position size calculated?
Backwards from the risk. The amount you accept losing (risk % × balance) divided by the price distance from entry to stop. The result is the position size, so that if the stop is hit you lose exactly that amount.
How does leverage affect my risk?
It does not affect the amount at risk — the stop determines that, not the leverage. Leverage only sets how much margin is locked and where liquidation sits. Higher leverage means a nearer liquidation, i.e. a greater chance of being closed out before the stop is even reached.
Is the liquidation price exact?
It is an approximation, assuming a flat 0.4% maintenance margin and ignoring fees, funding and extra margin. Exchanges use their own tiered formulas; always check the figure in the exchange panel.
What risk/reward ratio should I use?
This tool recommends none, because the right ratio depends on the strategy's win rate — which is something to measure, not to guess. Our public record shows our real win rate and the number of trades it was measured over.