Free trading calculators

The arithmetic you should do before a trade, not after it. Everything runs in your browser — no account, no email, nothing stored or sent anywhere.

• Prop firm drawdown calculator

  Work out your exact breach level and how much room is left, for static or trailing drawdown. Presets for FTMO, FundingPips, The5ers, FundedNext, E8, Alpha Capital, Topstep and Apex.

• Position size calculator

  Work out the lot size that risks exactly what you meant to risk. Enter your account, your risk percentage, your entry and your stop — for forex, gold and index CFDs.

• Expectancy and R-multiple calculator

  Find out whether a strategy makes money. Enter win rate and average win and loss in R to get expectancy per trade, the breakeven win rate, and the losing streak to expect.

Then practise with them

A calculator answers the question once. Doing it right under pressure, on a position that is already moving against you, is a separate skill. TradeDrill replays real market history bar by bar with the future hidden so you can build it — free.