Percentage Calculator
Find a percentage of a number, or add or subtract a percentage. See the formula and a worked example.
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Everyday calculations
Tools for money, time and daily decisions.
Percentage Change Calculator
Calculate the percentage increase or decrease between an original value and a new value, with the absolute difference.
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Discount Calculator
Calculate a discounted price and how much you save. Enter any price and a discount from 0% to 100%.
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Average Calculator
Find the arithmetic mean, sum and count of a list of numbers. Enter values separated by spaces or semicolons.
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Proportion Calculator
Solve a direct proportion a : b = c : x. Enter three values to find the missing fourth value.
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Fraction Simplifier
Reduce a fraction to its simplest form and see its decimal value. Enter an integer numerator and a positive denominator.
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