Percentage Calculator
Find any percentage instantly, what a number is worth, what percent one value is of another, or the whole from a part.
Result
—
Enter both values above.
Result
—
Enter both values above.
Result
—
Enter both values above.
Percentage Formulas
A percentage represents a fraction of 100, “20%” means 20 out of every 100. All percentage problems come down to one of three variations of the same relationship:
Finding a percentage of a number: multiply the number by the percentage, then divide by 100.
Finding what percent a part is of a whole: divide the part by the whole, then multiply by 100.
Finding the whole: divide the known part by the percentage (as a decimal).
How to Use This Percentage Calculator
Pick the phrasing that matches your question, most percentage problems fit one of the three tabs above.
Fill in the two known numbers.
Your answer updates instantly as you type, no button needed.
Frequently Asked Questions
How do I calculate a percentage of a number?
Multiply the number by the percentage, then divide by 100. For example, 20% of 150 is (150 × 20) ÷ 100 = 30.
How do I find what percent one number is of another?
Divide the part by the whole and multiply by 100. For example, 30 out of 150 is (30 ÷ 150) × 100 = 20%.
What’s the difference between percentage and percentage points?
A percentage is a ratio (like 20%), while a percentage point refers to the arithmetic difference between two percentages (going from 20% to 25% is a 5 percentage-point increase, but a 25% relative increase).
Can percentages be greater than 100%?
Yes. A percentage greater than 100% simply means the part is larger than the whole it’s being compared to, for example, 150 is 150% of 100.