Tools

Trading & risk calculators

Interactive tools — each with its formula, worked examples, and FAQ. Arithmetic for learning and planning, never advice or signals.

Risk

Size a position from account risk and stop distance.

Compare potential reward to risk and find the break-even win rate.

Estimate transaction costs and the move needed to break even.

Required margin and effective leverage for a position.

Visualize the expiration payoff of a single option leg.

Compound annual growth rate between two values over time.

Largest peak-to-trough decline of an equity curve.

Expected value per trade from win rate and average win/loss.

Project compound growth of a balance with optional contributions.