Calculators & Tools 2026

Trading decisions involve arithmetic that is easy to get wrong under time pressure: how many lots fit a fixed cash risk, how much margin a position consumes, what a spread costs across a round trip. Doing that math by hand on a phone between entries is where most sizing mistakes happen. These calculators replace the mental arithmetic with a repeatable process you can run before every order and re-run when market conditions change.

Each tool focuses on one job. Position sizing converts a chosen risk percentage into a trade size; the profit-and-loss calculator prices a scenario from entry, exit, and size; the margin calculator estimates the collateral a broker will require at a given leverage; risk-reward grades whether a setup is worth taking before you commit; spread cost converts the quoted spread into currency across a typical position; drawdown and compound interest model account-level outcomes over time; and the notional exposure calculator shows the real market value behind a levered position. Every tool runs entirely in your browser — nothing is uploaded, stored, or shared.

The defaults on each page are conservative, industry-standard values, so a first-time visitor gets a meaningful answer without knowing every input. Once you know your broker's contract size, pip value, and margin rate, entering those figures gives results that closely match the provider's own platform. Results are estimates for planning and education only: actual fills, spreads, swaps, and conversions will shift the final number, and no calculator can predict market outcomes. Confirm sizes with your broker's tools before placing an order, and treat leverage as a risk multiplier in both directions.

Five more tools cover position quality and risk: the Kelly Criterion calculator sizes stakes from edge and odds, risk of ruin estimates the odds of hitting a drawdown before your edge plays out, trade expectancy turns win rate and average win/loss into expected value per trade, futures PnL marks contract moves to your exit, and liquidation price finds the level at which a leveraged position is force-closed.