About

Null World Trading Tools is a free collection of trading and investing calculators from Null World Trading. Every tool runs instantly in your browser — no sign-up, no download.

Why this exists

Most traders lose consistency not because they lack a thesis, but because they size by feel and skip risk math. These calculators turn that guesswork into repeatable numbers before capital is at risk.

What you will find

• Risk tools: position size, R:R, stops, expectancy, risk of ruin
• Stock tools: P&L, averages, ROI, break-even
• Options tools: single-leg P&L, covered call, CSP, iron condor, Black-Scholes, Greeks
• Plain-English formulas and examples on every page

Explore the calculator hub or visit the Null World Trading corporate site.