Simple and fast tool for all your percentage calculations.
Free Online Percentage Calculator
Welcome to our free percentage calculator. Whether you need to find a percentage of a number, calculate percentage change, or solve 'what percent is X of Y', our tool makes it easy and instant.
Why Use Our Percentage Calculator?
- Multiple Modes: Calculate percentage of a number, percentage part, and percentage change.
- Instant Results: See the results immediately as you type.
- Mobile Friendly: Works perfectly on your phone, tablet, or desktop.
- Free & Private: No registration required, and all calculations happen in your browser.
How to Use
- Select Mode: Choose the type of calculation you need from the sidebar (or top menu on mobile).
- Enter Values: Input your numbers into the fields.
- Get Result: The result appears instantly.
Common Percentage Questions
How do I calculate a percentage of a number?
To calculate X% of Y, multiply Y by X and then divide by 100. For example, 15% of 100 is (15/100) * 100 = 15.
How do I calculate percentage change?
Subtract the old value from the new value, divide by the old value, and multiply by 100.
Useful for Everyone
Perfect for students, shoppers calculating discounts, or professionals needing quick estimates.
Start Calculating Now
Use our free tool for all your percentage needs. It's fast, accurate, and easy to use.