About Percentage Calculator
Fast, accurate percentage calculators with plain‑English explanations—built for mobile and desktop.
What this site does
This website helps you calculate percentages quickly and clearly. Whether you’re figuring out a tip, a discount, a grade, or percent change, our calculators show the answer and the simple formula used.
Our calculators
Find a percent of an amount
Enter a percent and an amount—great for tips, discounts, and commissions.
What percent is one number of another?
Type the part and the whole—perfect for grades and goal progress.
Percent change calculator
Enter the original and the new amount to see increase or decrease in %.
How to use the tools
- Don’t type the % sign—just the number (e.g., “15”).
- Amounts accept decimals (e.g., “48.75”).
- Click any preset chip (like “15% tip on $48”) to fill values instantly.
How we keep this site free
We show a small number of ads. We keep them lightweight and avoid layout shifts by reserving space. If you find the site helpful, sharing it helps us a lot!
Privacy
We use privacy‑friendly analytics to understand usage and improve the site. See our Privacy Policy.