➗ Math calculators
Percentages, ratios and quick calculations.
Percentage
Work out what X% of a number is, what one number is as a percentage of another, and percentage change.
Open calculator →Ratio
Simplify a ratio to its lowest terms, see it as a decimal and percentage split, and scale it up or down.
Open calculator →Discount
Work out the sale price and how much you save from an original price and a percentage discount.
Open calculator →Tip
Calculate the tip and total on a bill, and split it evenly between any number of people.
Open calculator →Average
Find the mean, median, mode and range of a list of numbers, plus the count, sum, minimum and maximum.
Open calculator →Fraction
Add, subtract, multiply and divide two fractions, with the answer simplified and shown as a decimal and mixed number.
Open calculator →GCF & LCM
Find the greatest common factor (GCF) and least common multiple (LCM) of two or more whole numbers.
Open calculator →Exponent
Raise a number to a power. Supports negative, decimal and fractional exponents, with the result in plain and scientific notation.
Open calculator →Percentage Change
Calculate the percentage increase or decrease from one value to another, plus the absolute change.
Open calculator →Aspect Ratio
Simplify a width and height to an aspect ratio, and scale dimensions while keeping the same ratio.
Open calculator →Roman Numerals
Convert numbers to Roman numerals and Roman numerals back to numbers, from 1 to 3,999.
Open calculator →GPA
Calculate your grade point average (GPA) on the 4.0 scale from a list of letter grades.
Open calculator →Square Root
Find the square root and cube root of a number, along with its square and cube.
Open calculator →Circle
Calculate a circle's area, circumference, diameter and radius from any one of them.
Open calculator →Right Triangle
From the two shorter sides of a right-angled triangle, find the hypotenuse, area, perimeter and angles.
Open calculator →Number to Words
Convert a number into words — useful for writing cheques, contracts and invoices.
Open calculator →Standard Deviation
Find the standard deviation, variance and mean of a data set, for either a sample or a whole population.
Open calculator →Prime Factors
Break a whole number down into its prime factors, and check whether a number is prime.
Open calculator →Logarithm
Calculate the logarithm of a number to any base, plus the natural log (ln), log base 10 and log base 2.
Open calculator →Quadratic
Solve any quadratic equation ax² + bx + c = 0 using the quadratic formula, with real or complex roots, discriminant and vertex.
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