Percentage Calculator — Free & Instant
Calculate percentages, increases, decreases and ratios instantly.
How to Use Percentage Calculator
Enter your numbers
Choose calculation type
See results with explanation
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About Percentage Calculator
Percentages appear everywhere — discounts, tips, tax, exam scores, investment returns, and data analysis. Zendrove's Percentage Calculator gives you instant results with step-by-step explanations so you understand the math behind every answer.
Supported Calculations
- X% of Y: Calculate tips, discounts, tax amounts, and proportions
- X is what % of Y: Find what percentage one number is of another
- % Change: Calculate percentage increase or decrease between two values
Quick Reference
To calculate 15% of any number, multiply by 0.15. To find what percentage A is of B, divide A by B and multiply by 100. For percentage change, subtract old from new, divide by old, and multiply by 100.
Frequently Asked Questions
What percentage calculations are supported?
Basic percentage (X% of Y), percentage increase/decrease, percentage difference, and fraction to percentage conversion.