Free tools
Five standalone calculators for the most common quantitative decisions in retail trading. Each runs entirely in your browser. No data is stored or transmitted.
Compute correct lot/share count from account size, risk percent, entry, and stop. The single most-used calculation in disciplined trading.
Compute strategy expectancy from win rate, average win, and average loss. Tells you whether your strategy is statistically positive over time.
Convert per-trade outcomes to risk-normalised R-multiples. The professional way to measure trades irrespective of size.
Visualise how much return is needed to recover from any drawdown. The asymmetry between loss and recovery is the most under-appreciated fact in retail trading.
Project compound returns from a starting capital, return rate, and time horizon. Optionally factor in regular contributions.