Solve any percentage problem instantly — what percent of a number, percentage increase or decrease, and more. Everything is calculated locally in your browser.
How to Use This Percentage Calculator
This tool solves the three most common percentage problems automatically as you type: finding a percentage of a number, finding what percentage one number is of another, and calculating the percent increase or decrease between two numbers. Want to see the formula behind it? Read our guide: How to Calculate Percentage Increase and Decrease.
Frequently Asked Questions
How do I calculate a percentage increase?
Use the third calculator: enter the original number and the new number, and it shows the percent change (positive for an increase, negative for a decrease).
Does this tool store the numbers I enter?
No. All calculations happen instantly in your browser — nothing is sent to a server or saved.
