tradingcalculator.app/ is a free collection of trading and investing calculators built to do one thing well: give you a number you can trust before you risk real money. Every tool runs instantly in your browser, with no sign-up and no download.
Why this site exists
Most traders lose money not because they pick the wrong stock, but because they size positions by feel, set stops at random, and never check the math on risk and reward. These calculators turn those guesses into quick, repeatable calculations — so your decisions stay consistent and your capital is protected.
What you’ll find here
- Stock, forex, options, crypto and futures calculators
- Position sizing, risk/reward and stop-loss tools
- Plain-English guides that explain the formula behind every tool
The tools are free forever. New calculators and guides are added regularly — if there’s one you’d like to see, tell us on the contact page.