Percentage Calculator
Solve the most common percentage questions with one simple calculator.
How to calculate percentages
Select the question that matches your problem, enter A and B, and choose Calculate. For example, to find 25% of 200, use the first option: 25 ÷ 100 × 200 = 50.
Percentage formulas
- A% of B: (A ÷ 100) × B
- A is what percent of B: (A ÷ B) × 100
- B is A% of what: B ÷ (A ÷ 100)
Frequently Asked Questions
Divide the percentage by 100, then multiply by the number.
Yes. Decimal inputs work in every mode.