Free Online Percentage Calculator — Step-by-Step Results

Percentages appear everywhere — from shopping discounts and tax rates to test scores, salary raises, and investment returns. Our percentage calculator makes any of these calculations effortless and educational.

You can calculate: what X% of a number is, the percentage one number represents of another, the final price after a percentage discount or markup, and the percentage change between two values. Each result includes a step-by-step explanation of the formula used.

Perfect for students learning math, shoppers comparing deals, business owners calculating margins, or anyone who needs a quick, reliable percentage result without doing the math by hand.

Calculate discounts, percentage increase, and percent change instantly