This free percentage calculator computes a number of values involving percentages, including the percentage difference between two given values.

The original calculator was invented in the 17th century by a Frenchman called Blaise Pascal! He was just 18 years old, and wanted to help his father do his tax calculations.

A beautiful, free online scientific calculator with advanced features for evaluating percentages, fractions, exponential functions, logarithms, trigonometry, statistics, and more.

Use our percentage calculator to work out increases, decreases or percentage differences. Common uses include calculating tax, savings increases, tips on a restaurant bill, or cash back on purchases.

Free online percentage calculator for increase, decrease, parts of total & more. Quick, accurate, and perfect for math, finance, or daily use.

Free online calculators for everything. Some solve problems, some satisfy curiosity and some simply for fun.

Learn how to calculate a percent of a value before and after, or find the percentage change between two values, and see how to calculate each one.