Professional calculators for position sizing, risk management, and performance analysis
Calculate exactly how many shares to buy based on your account size and risk tolerance.
Professional traders risk 0.5% - 2% per trade
Evaluate trade quality by calculating your R:R ratio and required win rate to be profitable.
Calculate your P&L for any trade, whether you're going long or shorting.
The math of losses is brutal. See exactly how much you need to recover from a drawdown.
How much your account has dropped from peak
The mathematically optimal bet size based on your edge. Used by professional gamblers and traders.
Your historical win %
Avg win ÷ Avg loss
Your expected profit per trade. Positive = edge. This is the most important metric for any system.
Total risk exposure across all open positions. Keep this under control to survive drawdowns.
Sum of (position size × distance to stop) for all trades
See how consistent returns compound over time. Small edges become massive with patience.
How much does price need to move just to cover your costs? Don't let fees eat your edge.
Express all trades in terms of R (initial risk). The language of professional traders.
Your 1R amount
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