Free Trading Calculators

Professional-grade tools used by serious traders. No signup required.

Trade Compass

All-in-one strategy analyzer: Kelly, Expectancy, Risk-Reward, Position Size & Risk of Ruin in one shot. Pre-fills from your journal.

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Evaluate if a trade has a favorable risk-reward profile before entering.

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Calculate the safe number of units to buy based on your risk tolerance.

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Find the optimal fraction of capital to risk per trade for maximum growth.

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Determine whether your trading strategy has a mathematical edge.

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See exactly how much you need to earn back after a losing streak.

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Calculate the probability of blowing up your account with your current setup.

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Track your trades with EdgeLedger

Journal every trade, analyze patterns, and systematically improve your edge.