Percentage Calculator
Work out percentages, ratios and increase/decrease — instantly.
Free online percentage calculator
Three quick percentage calculators in one place: find what a percentage of a number is, work out what percent one number is of another, and calculate the percentage increase or decrease between two values. Perfect for marks, discounts, tips and stats — all private, in your browser, with no sign-up.
Frequently Asked Questions
Is this percentage calculator free?
Yes, it is completely free with no sign-up and no limits. Enter your numbers and get the answer instantly.
How do I find what is X% of a number?
Use the first calculator, enter the percentage and the number, and it shows the result. For example, 20% of 150 is 30.
How do I calculate percentage increase or decrease?
Use the third calculator, enter the original value and the new value, and it shows the percentage increase or decrease between them.
Is my data stored anywhere?
No. All calculations happen in your browser. Nothing is uploaded or saved, so your numbers stay private.
Does it work on mobile?
Yes, the percentage calculator is fully mobile-friendly and works on any phone, tablet or computer.