Percentage
Calculator
All percentage calculations in one place. Instant results.
Quick reference for common percentage calculations:
(Value × Percent) / 100
(Part / Whole) × 100
((New - Old) / Old) × 100
Value × (1 ± Percent/100)
How to use the Percentage Calculator
Our Percentage Calculator handles all common percentage calculations in one place. Whether you need to find a percentage of a value, calculate percentage change, or determine what percentage one number is of another, this tool provides instant, accurate results.
Simply select the calculation type you need, enter your values, and see results instantly. Each calculation includes a visual progress bar and the formula used, helping you understand the math behind the result. Your calculation history is saved automatically for quick reference.
Common uses: Calculate discounts, tips, tax amounts, salary increases, grade percentages, investment returns, and more. Perfect for students, professionals, and everyday calculations.
To calculate percentage, divide the part by the whole and multiply by 100. For example, 50 out of 250 is (50/250) × 100 = 20%. Our calculator does this automatically.
Percentage change = ((New Value - Original Value) / Original Value) × 100. A positive result means increase, negative means decrease.
Yes, our percentage calculator is 100% free with no limitations. All calculations happen in your browser with complete privacy.
Yes! Your recent calculations are automatically saved in your browser history. You can revisit them anytime or clear the history when done.