What is the Percentage Calculator?
The Percentage Calculator is a free online tool that solves all types of percentage problems. Whether you need to find a percentage of a number, calculate percentage change, or solve reverse percentages.
Available Calculations
1. Percentage of a Number
What is X% of Y? Example: What is 15% of 200? → 30
2. Percentage of Two Numbers
X is what percent of Y? Example: 30 is what percent of 200? → 15%
3. Percentage Change
What is the percentage change from X to Y? Example: From 100 to 150 → 50% increase
4. Reverse Percentage
X is Y% of what number? Example: 30 is 15% of what? → 200
Key Features
- Multiple Types — All percentage calculations in one tool
- Instant Results — Real-time calculation
- Step-by-Step — See how the result was calculated
- 100% Private — All calculations happen in your browser
- Mobile Friendly — Works on all devices
Common Uses
- Shopping discounts and sales tax
- Tip calculations
- Grade calculations
- Business metrics and statistics
- Financial planning