Percentage Calculator – Quick & Easy
Free online tool to solve percentage problems instantly: find what is X% of Y, what percentage one number is of another, percentage increase or decrease, reverse calculations, discounts, tips, and more.
Common Calculations
- What is 15% of 200? → 30
- 30 is what % of 200? → 15%
- Price increased from $150 to $180 → +20%
- Calculate discounts (25% off $120 → save $30, pay $90)
- Reverse: find original value after a percentage change
- Tips, salary increases, growth rates
How to Use
Enter values in the calculator fields above (JavaScript required for live results). Results update in real time. Perfect for students, shoppers, business owners, or anyone needing quick math.
Example: A $200 item on 20% sale saves $40, final price $160.
Why SimpleMetrics?
Fast, free, no sign-up, mobile-friendly, and ad-light. Bookmark for easy access whenever you need to calculate percentages.