Math calculators
9 calculators
Percentages in every direction, percent error, the mean and its relatives, FOIL and absolute value. Each page shows the rule next to the answer.
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Percentage CalculatorFind a percentage of a number, a percentage change, a percentage difference, a reverse percentage and more, with the working shown.FOIL CalculatorMultiply two binomials with the FOIL method and see the first, outer, inner and last terms and the expanded answer.Mean CalculatorFind the mean, median, mode, range and standard deviation of a list of numbers.Percent Off CalculatorCalculate the sale price and savings after a percent off discount.Decimal to Percent ConverterConvert decimals to percentages and percentages to decimals, with the fraction.Absolute Value CalculatorFind the absolute value of a number, or the distance between two numbers.Percent Error CalculatorCalculate percent error from a measured value and a true value.Percentage Increase CalculatorCalculate percentage increase between two numbers, or apply a percentage increase.Percentage Decrease CalculatorCalculate percentage decrease between two numbers, or apply a percentage decrease.