Free trading tools
Simple calculators for algo traders. No signup, no data leaves your browser.
Position Size Calculator
Contracts from account size, risk %, and stop distance — checked against the drawdown and daily-loss limits you enter.
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Monte Carlo Simulator
Simulate hundreds of equity curves from your win rate and R:R. See max drawdown, losing streaks, and risk of ruin.
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Market Making Simulator
Watch an Avellaneda-Stoikov market maker quote bid/ask on a simulated chart. Adjust risk aversion, volatility, and order flow.
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