Free Percentage Calculator Online — Calculate percentages easily
What is X% of Y?
X is what % of Y?
Percentage Change
Percentage FAQ
How do I calculate percentage?
To find X% of Y: multiply Y by X and divide by 100. Example: 25% of 200 = 200 × 25 / 100 = 50.
How to Use Our Percentage Calculator
Calculate percentages quickly: find what percent one number is of another, calculate a percentage of a value, or find percentage increase/decrease between two numbers. Enter your values and get instant results.
Useful for calculating discounts, tips, tax amounts, grade percentages, profit margins, and any everyday math involving percentages. No mental math required.
Why Use Our Percentage Calculator?
It's free, handles multiple percentage calculation types in one tool, and shows the formula used so you can understand the math. Faster and more reliable than manual calculation.
How do I calculate percentage increase?
Percentage increase = ((New Value - Old Value) / Old Value) × 100. Enter your old and new values, and the tool calculates the percentage change automatically, whether it's an increase or decrease.
How do I find what percentage one number is of another?
Divide the part by the whole and multiply by 100. For example, 25 out of 200 = (25/200) × 100 = 12.5%. Just enter both numbers and the tool does the math instantly.
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