How to Use the Percentage Calculator
Enter two values and click Calculate. The tool instantly computes four different percentage relationships between your numbers.
What This Calculator Computes
- X% of Y — e.g. 25% of 200 = 50
- X is what % of Y — e.g. 50 is 25% of 200
- % change from X to Y — e.g. from 100 to 150 = +50%
- Y% of X — reverse calculation
Frequently Asked Questions
How do I calculate a percentage?
To calculate X% of Y: multiply Y × X, then divide by 100.
Is this calculator free?
Yes, 100% free. No account needed.