Use this free percentage calculator to work out percentages in seconds. Pick the type of calculation you need, enter your numbers, and the answer appears instantly along with the formula. It’s handy for discounts, tips, grades, price changes, and anything else where you need to find a percentage of a number, compare two values, or work out an increase or decrease.
Examples
- What is 15% of 200? 15 ÷ 100 × 200 = 30
- 30 is what percent of 200? 30 ÷ 200 × 100 = 15%
- Percentage change from 80 to 100: (100 − 80) ÷ 80 × 100 = +25%, so the value went up by a quarter.
- Increase 200 by 15%: 200 × (1 + 15 ÷ 100) = 230
- 30 is 15% of what number? 30 ÷ 15 × 100 = 200
What it includes:
- Five calculators in tabs:
- What is X% of Y?
- X is what % of Y?
- Percentage change from X to Y
- Increase or decrease a number by X%
- Find the whole, when X is Y% of it
- Live results: the answer updates as you type, with a short sentence and the formula shown underneath.
- Convenience: numbers like
1,250.5work, there are Copy result and Clear buttons, and division by zero shows a clear message. - Layout: it works on mobile and with keyboard navigation, and it inherits your theme’s font.
- Loading: the CSS and JS only load on pages that use the shortcode, so the rest of your site isn’t slowed down.