Free tools
Free trading & backtesting calculators
Instant, free calculators for the numbers that decide whether a strategy is worth trading — Sharpe ratio, maximum drawdown and position size.
Sharpe ratio calculator
Free Sharpe ratio calculator. Enter annualized return, risk-free rate and volatility to get the Sharpe ratio instantly, with a plain-English verdict. Learn what a good Sharpe ratio is and why it can mislead.
Max drawdown calculator
Free maximum drawdown calculator. Paste an equity curve and get the max drawdown %, the peak and trough, and a plain-English verdict on how painful the strategy would have been to hold.
Position size calculator
Free position size calculator. Enter your account size, risk per trade, entry and stop-loss to get the exact number of shares to trade and the cash you're risking. Plain-English risk management.