PrismKitCalculatorsPercentage CalculatorPercentage CalculatorRuns in your browserLocalCopy linkMarkdownWork out a percent of a number, what percent one number is of another, and percent change.Math EvaluatorType a mathematical expression and get the result, with support for functions like sqrt, sin, and log.Aspect Ratio CalculatorReduce a width and height to its aspect ratio, or resize while keeping the ratio locked.