Position Size Calculator

Work out how large your next position should be before you take it. Enter your account size, the percentage of it you're willing to risk, and your stop loss distance — the calculator returns your position size in lots and units, the pip value, the margin required, and your risk-to-reward ratio.

It covers 51 forex pairs, gold and silver, and 20 crypto pairs, in 18 account currencies, with the per-symbol details handled for you — JPY pip sizing, metal contract sizes, live currency conversion.

The calculator is free and doesn't require an account. It loads with the Tradr app — if this page hasn't turned interactive, enable JavaScript.

Tradr is a social trading journal where traders post their trades and build verifiable track records. Position sizing is how the traders on Tradr manage risk — the same calculation this tool runs is applied to every trade posted on the platform.