Percentage Calculator Online — X% of Y, Change & More
Find X% of a number, what percent one number is of another, or percentage change.
FAQ
Percentage Calculator — frequently asked questions
How do I find X% of a number?
Choose “X% of Y”, enter both numbers and calculate. For example, 20% of 500 is 100.
How do I calculate a percentage increase or decrease?
Choose “% change from X to Y”. The result shows the change as a percentage and whether it is an increase or a decrease.
What happens with very large numbers?
Results of 15 digits or more are shown in scientific notation, for example 1.0e+30, so they fit the screen. Digits beyond about 15 are not exact in any browser calculator.
Are my numbers uploaded or stored anywhere?
No. Percentage Calculator runs in your browser, so your numbers stay on your device and are never sent to our servers or saved anywhere.
Is Percentage Calculator really free? Do I need to sign up?
Yes, it is completely free. There is no account, signup, watermark or email to hand over; open the page and use it as often as you like.
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QUICK GUIDE
How to use Percentage Calculator
- Fill in the fields above.
- Click Calculate.
- See the result instantly below.
Privacy
This tool runs in your browser. No data is ever sent to a server, and there is no usage limit.