Free Online Tool

Percentage Calculator

Versatile percentage calculation tool for solving 'X% of Y', percentage changes, discounts, and ratio conversions.

Interactive Percentage Calculator

Math

What is% of?

Select calculation mode (Percent of number, Percent change, or Value ratio) and enter numbers.

Percentage = (Part / Whole) × 100

Our mathematical algorithms adhere to standard scientific and financial guidelines to deliver maximum accuracy.

Multiply the original price by 0.20 to get discount amount, then subtract from original price.

Perform advanced mathematical operations including trigonometry, logarithms, powers, and roots.

Add, subtract, multiply, divide, and simplify proper and improper fractions or mixed numbers.

Generate random numbers, lottery numbers, or random pick lists within custom numeric ranges.

Calculate side lengths, angles, perimeter, and area of any right or oblique triangle.

Calculate sample and population standard deviation, variance, mean, and sum of squares.