Free Percentage Calculator — no signup

Fast, accurate percentage maths

Find a percentage of a number, what percent one value is of another, or the percent increase or decrease between two numbers.

What is X% of Y?

20% of 150
30

Formulas used

The simple maths behind it

% of a number

Result = (P ÷ 100) × N

X is what % of Y

Result = (X ÷ Y) × 100

% change

Result = ((To − From) ÷ From) × 100

Why use it

Percentages, without the headache

Save time on test scores, discount maths, stats homework and everything in between.

  • Three calculations in one tool
  • Instant live results as you type
  • Works on mobile and desktop
  • No signup, 100% free forever

Explore more free student tools

See all tools