Percentage Calculator
Work out percentages, percentage change and what percent one number is of another.
- Free
- Online
- No limits
- Secure
Your files are processed locally in your browser and never uploaded.
What is Percentage Calculator?
Work out percentages quickly and correctly. This free percentage calculator finds what percent one number is of another, adds or subtracts a percentage, and calculates percentage change — ideal for discounts, tips, tax and grades.
How to use Percentage Calculator
- 1
Choose a calculation
Pick the type of percentage question you have.
- 2
Enter your numbers
Fill in the values you know.
- 3
Get the answer
See the result calculated instantly.
Key features
- Find what percent one number is of another
- Add or subtract a percentage from a value
- Calculate percentage increase and decrease
- Perfect for discounts, tips, tax and grades
- Free and instant, no sign-up
- Works on any device
Why use Percentage Calculator?
Easy to use
Percentage Calculator was built to be as simple as possible. Add your file, get your result — there's no learning curve.
No installation
It runs right in your web browser. There is nothing to download or install on your device.
100% free
Use Percentage Calculator as much as you want, completely free — no account and no hidden fees.
Works everywhere
Windows, macOS, Linux, Android or iOS — if you have a browser, it simply works.
Privacy first
We respect your data. Your files are handled with privacy in mind and never kept longer than needed.
Fast & no limits
There are no artificial limits. Process your files quickly, as many times as you need.
Questions and answers
Is Percentage Calculator free to use?
Yes. Percentage Calculator is completely free, with no limits and no sign-up required.
Do I need to install any software?
No. Percentage Calculator works directly in your web browser, on any device.
Are my files safe?
Yes. Your files are processed locally in your browser and are never uploaded to any server.
Which devices and browsers are supported?
Percentage Calculator works on all modern browsers and operating systems, including Windows, macOS, Linux, Android and iOS.
Is there a limit on how many files I can use?
No. You can use Percentage Calculator as many times as you like, for free.
Please rate this tool
Your feedback helps us make OmniaTools better.