Position Size Calculator
Size a trade from the amount you are willing to lose, not from a round number of coins. Works for longs and shorts, with or without leverage.
Position
Size (units)—
Notional—
Margin required—
Risk
Risk amount (1R)—
Stop distance—
Stop distance %—
R-multiple targets
| Target | Price | Move | Profit |
|---|
How it works
Risk amount is account × risk%. Position size in units is
risk amount ÷ |entry − stop|, and notional is units × entry.
Leverage only divides the notional to give the margin the exchange will lock;
it does not change the size. Each kR target sits k × stop distance
beyond entry in the trade direction and returns k × risk amount.
FAQ
- What does 1% risk per trade mean?
- If the trade hits your stop you lose 1% of the account, no matter how big the position is. The calculator works backwards from that loss and the distance to your stop to find the position size.
- Does leverage change the position size?
- No. Leverage only changes how much margin the exchange locks up for the same position. The size is set by your risk amount divided by the stop distance; leverage divides the notional to give the margin required.
- What is an R-multiple?
- R is the amount you risk on the trade. A 2R target is a price where the profit equals twice the risk. Expressing targets in R makes trades comparable regardless of the account size or asset.
Related: Liquidation price · Funding rate · Exchange fees · All tools
Not financial advice. Fees, slippage and funding are not included; the exchange's fill is what counts.