Free tools
Free trading calculators
In short
Five calculators for the maths behind every automated trade: where a leveraged position gets liquidated, how big a position should be for the risk you choose, what a prediction market price really pays after fees, how much of a bankroll an edge justifies, and whether a set of forecasts is any good.
Crypto futuresLiquidation price calculatorFree liquidation price calculator for Binance and Bybit USDT perpetuals.RiskPosition size calculatorFree crypto position size calculator: size, margin and safe leverage from your balance, risk per trade and stop loss, fees included.Prediction marketsPolymarket & Kalshi odds calculatorTurn a Polymarket or Kalshi price into implied probability, payout, fees, expected value and Kelly stake.ForecastingBrier score calculatorFree Brier score calculator.Bet sizingKelly criterion calculatorFree Kelly criterion calculator for betting odds, prediction market prices and trading win rates.
Launching 23 October 2026.
Reserve Early AccessReserve Early Access for $10 in crypto: 50% off your first 12 months, deposit credited to your first payment.
Trading involves risk of loss. Nothing here is investment advice. Read the risk disclosure.