Percentage Calculator is a free online tool to calculate percentages.
Use tab to move to the next field. Use shift-tab to move to the previous field. Press enter to calculate.
This website is designed to help you quickly and easily calculate percentages for a variety of purposes. Whether you're calculating discounts, calculating tips, or trying to figure out how much something has increased or decreased in value, our percentage calculator can help.
Percentage is a way of expressing a number as a fraction of 100. It is commonly used to represent a portion of a whole or to compare two numbers. Percentages are often denoted with the symbol "%". For example, if there are 100 cars in a garage and 25 of them are white, we could say that 25% of the cars are white.
This percentage calculator solves the three questions people ask most often: what a percentage of a number is, what percentage one number is of another, and how big a percentage change is between two values. Type your numbers into any of the three boxes above and the answer appears instantly — there is nothing to submit and no page reload.
Percentages turn up everywhere: sales tax and tips, exam scores, interest rates, discounts, commission, body-fat readings, opinion polls and year-over-year growth. Because a percentage is just a fraction of 100, every one of those problems reduces to one of the three formulas below.
All three calculations above come from the same idea — "per cent" means "per hundred".
What is P% of X? result = (P ÷ 100) × XX is what percent of Y? result = (X ÷ Y) × 100Percentage change from A to B? result = ((B − A) ÷ A) × 100Add P% to X? result = X × (1 + P ÷ 100)Subtract P% from X? result = X × (1 − P ÷ 100)Multiply 80 by 15, then divide by 100: (15 ÷ 100) × 80 = 0.15 × 80 = 12. A 15% tip on an $80 meal is $12.
Divide the part by the whole and multiply by 100: (37 ÷ 200) × 100 = 18.5%. If you scored 37 out of 200 on a test, that is 18.5%.
Subtract, divide by the original, multiply by 100: ((150 − 120) ÷ 120) × 100 = (30 ÷ 120) × 100 = 25%. The value rose by 25%.
((120 − 150) ÷ 150) × 100 = (−30 ÷ 150) × 100 = −20%. A drop from 150 to 120 is a 20% decrease — note it is not the same 25% as the increase above.
$63 represents 70% of the original price, so original = 63 ÷ 0.70 = $90.
Divide the percentage by 100 and multiply by the number. For 20% of 250: (20 ÷ 100) × 250 = 50.
Divide the first number by the second and multiply the result by 100. For 45 out of 60: (45 ÷ 60) × 100 = 75%.
Each percentage is taken from a different base. 100 increased by 25% is 125; 125 decreased by 25% is 93.75, not 100, because the 25% is now calculated from the larger number.
To add P%, multiply by (1 + P/100). To remove a percentage that is already included, divide by (1 + P/100). For example, to strip 20% VAT from a $120 gross price: 120 ÷ 1.20 = $100 net.
A move from 40% to 44% is a rise of 4 percentage points, but a 10% relative increase (4 ÷ 40). News reports often mix the two up.
Divide the final price by (1 − discount/100). A $63 item after 30% off was 63 ÷ 0.70 = $90 before the discount.
Results are shown to two decimal places. The full-precision value is used internally, so chaining calculations stays accurate.
No. Every calculation runs in your browser. Nothing you type is uploaded or stored.