About PercentPad

PercentPad is a set of free percentage calculators for students, teachers, shoppers and anyone who works with numbers. Each one answers as you type and shows the formula with your own numbers, so you can check the result and learn the method at the same time.

What makes it different

• Exact math. Calculations use decimal arithmetic, so 7% of 0.1 is 0.007, not 0.007000000000000001.
• Steps, not just answers. Every result shows how it was worked out.
• Private by design. Your numbers never leave your browser. No sign-up, no cookies, no tracking across sites.
• Works anywhere. Fast on old phones and slow connections, in any country, with your number format.

Corrections

If you find a mistake, a confusing explanation or a calculation you’d like to see, please get in touch. Corrections are made quickly and noted on the methodology page.

Updated October 2026