How to Calculate Percentages
A percentage represents a fraction of 100. For example, 25% means 25 out of 100, or one quarter. Our calculator handles five common percentage problems so you don't need to remember the formulas.
Common Uses
- Discounts — What's 20% off $45?
- Tips — What's 15% of a $60 meal?
- Tax — Add 8% sales tax to a price
- Growth — Revenue went from $10K to $15K — what's the increase?
- Grades — 42 correct out of 50 — what percentage is that?
Is This Free?
Yes. Completely free. No registration, no limits, no data collection. All calculations happen in your browser.