Percentage Calculators
Work out a percentage of a number, percentage change, and reverse a percentage back to its original value.
Everyday math, made simple.
NumberUtils provides free online calculators for percentages, ratios, fractions, averages and everyday mathematics. Every result shows the formula behind it.
Calculator categories
Ratio Calculators
Simplify a ratio to its lowest terms and see it as a share of the whole.
Fraction Calculators
Add, subtract, multiply and divide fractions, simplify a fraction, and convert between fractions, decimals and percentages.
Statistics Calculators
Find the average of a list of numbers, or the mean, median, mode and range all at once.
Commercial Maths Calculators
Work out a sale price after a discount, a selling price after a markup, or a profit margin.
Number Tools
Find the greatest common divisor and least common multiple of two numbers, check whether a number is prime, or list all of its factors.