RatioStep: Ratio Calculator

Enter three values. Get the missing value and see how to calculate it. Then try a similar problem with hints. RatioStep solves direct and inverse proportions for recipes, quantities, and homework. See a mental shortcut suited to your numbers or follow the arithmetic step by step. CALCULATE - Solve for any of the four values. - Switch between direct and inverse proportion. - Copy the answer or paste a value. UNDERSTAND AND PRACTICE - See a mental shortcut adapted to your calculation. - Follow the formal method step by step. - Try a similar problem with hints and an option to reveal the answer. - Practice without timers, scores, or streaks. MAKE IT YOURS - Choose a row or stacked layout. - Set the display precision from one to six decimal places. - Use English, Spanish, or Portuguese (Portugal). Calculations and practice work offline. No account, ads, tracking, purchases, or subscription. Your preferences stay on your device. Enter your three values to get started. Requires iOS 18 or later.