Calculators
Math calculators
Percentages, equations, averages and number tools for school, work and daily decisions.
01Percentage CalculatorFind a percentage of a number, or work backwards from a result.02Percentage Change CalculatorMeasure how much a value increased or decreased.03Percentage Difference CalculatorCompare two values without treating either one as the starting point.04Average CalculatorFind the arithmetic mean of a list of numbers.05Weighted Average CalculatorCombine values when some observations matter more than others.06Ratio CalculatorSimplify a ratio and scale it to a total.07Proportion CalculatorSolve a missing value in two equivalent ratios.08Fraction CalculatorAdd, subtract, multiply or divide two fractions.09Decimal to Fraction CalculatorConvert a decimal into a reduced fraction.10Fraction to Decimal CalculatorConvert a fraction into a decimal with useful precision.11Scientific CalculatorRun common scientific operations with a focused, keyboard-friendly form.12Square Root CalculatorFind the principal square root of a non-negative number.13Exponent CalculatorRaise a base to any exponent.14Logarithm CalculatorCalculate a logarithm for a chosen base.15GCF CalculatorFind the greatest common factor of two or more integers.16LCM CalculatorFind the least common multiple of two or more integers.17Prime Number CheckerCheck whether an integer is prime and see its nearby factors.18Quadratic Formula CalculatorSolve a quadratic equation and show its discriminant.19Standard Deviation CalculatorMeasure how spread out a dataset is.20Random Number GeneratorGenerate a random integer inside an inclusive range.