Percentage Calculator: Find Any Percentage Online
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Percentage Calculator
A percentage is a way of expressing a number as a fraction of 100 — the symbol % literally means "per hundred". This free online percentage calculator handles the four questions people ask most:
- What is X% of Y? — find a percentage of any number.
- X is what percent of Y? — find the percentage between two numbers, i.e. one number as a percentage of another.
- X is Y% of what? — a reverse percentage: recover the whole from a part.
- Percentage of an amount — the same math with money-style results for prices, tax, and tips.
- What is X% of Y%? — a percent of a percent, for stacked or compound rates.
The percentage formula
The basic percentage formula is:
Percentage = (Part ÷ Whole) × 100
Example: you scored 30 points out of 120. (30 ÷ 120) × 100 = 25%. To go the other way — finding 25% of 120 — divide the percentage by 100 and multiply: (25 ÷ 100) × 120 = 30.
This is also how you find a percent of a total: divide the part by the total and multiply by 100. So 45 out of a total of 180 is (45 ÷ 180) × 100 = 25% of the total.
Common percentage calculations
A few frequently searched "percent of a number" results. For any other pair, enter your own values in the calculator above.
| Calculation | Working | Result |
|---|---|---|
| 10% of 15,000 | (10 ÷ 100) × 15,000 | 1,500 |
| 10% of 50,000 | (10 ÷ 100) × 50,000 | 5,000 |
| 5% of 50,000 | (5 ÷ 100) × 50,000 | 2,500 |
| 30% of 18,000 | (30 ÷ 100) × 18,000 | 5,400 |
| 30% of 25,000 | (30 ÷ 100) × 25,000 | 7,500 |
| 20% of 200,000 | (20 ÷ 100) × 200,000 | 40,000 |
Percentage of an amount of money
Percentages of amounts come up constantly: a 15% VAT on a 200 purchase is (15 ÷ 100) × 200 = 30; a 10% tip on an 85 bill is 8.50. The "% of an amount" mode gives you the answer formatted like money, along with the remaining amount. For price reductions, use the dedicated discount calculator — it also shows the final price and how much you save.
What is a percent of a percent (percentage of a percentage)?
Finding a percentage of a percentage — sometimes called a percent of a percent — comes up with stacked or compound rates: a 20% commission on a 50% profit margin, or 10% of a 30% share. Multiply the two percentages and divide by 100: 50% of 20% is (50 ÷ 100) × 20 = 10%. The order doesn't matter — 50% of 20% and 20% of 50% both give 10%. Use the "What is X% of Y%?" mode above.
Percentage of time (hours and minutes)
Time works the same way — just divide by the total and multiply by 100. To convert hours to a percentage of a day, divide by 24: 8 hours is (8 ÷ 24) × 100 = 33.33% of the day. For a work shift, divide by the shift length instead. To turn minutes into a percentage of an hour, divide by 60: 30 minutes = (30 ÷ 60) × 100 = 50%. Use the "X is what % of Y?" mode with your time on top and the total time on the bottom.
Percentage increase and change
To measure how much a value grew or shrank — a salary raise, a price rise, a weight change — you need the change relative to the starting value, which is a different formula: ((New − Old) ÷ Old) × 100. Use the percentage increase calculator for that.
How to calculate percentage on a phone calculator
On most phone calculators, type the number, press ×, type the percentage, then press the % key and =. For example 150 × 20 % = shows 30. If your calculator has no % key, multiply by the percentage and divide by 100 — or simply use this page; it also accepts Arabic-Indic digits (٠-٩).
FAQs
Divide the percentage by 100, then multiply by the number. For example, 20% of 150 is (20 ÷ 100) × 150 = 30. Or just enter both values in the calculator above and press Calculate.
Divide the first number (the part) by the second number (the whole) and multiply by 100. For example, 30 out of 120 is (30 ÷ 120) × 100 = 25%.
Percentage = (Part ÷ Whole) × 100. A percentage is simply a ratio expressed as a fraction of 100 — the % symbol means "per hundred".
The same way as any number: multiply the amount by the percentage divided by 100. For example, 15% VAT on 200 is (15 ÷ 100) × 200 = 30. Use the "Percentage of an amount" mode above for a money-formatted result.
If you know the part and the percentage it represents, divide the part by the percentage over 100 to find the whole. For example, if 30 is 25% of a number, that number is 30 ÷ 0.25 = 120. Use the "X is Y% of what?" mode.
To find one percentage of another (a percentage of a percentage), multiply them and divide by 100. For example, 50% of 20% is (50 ÷ 100) × 20 = 10%. This comes up with stacked or compound rates — a 20% commission on a 50% margin, for instance. Use the "What is X% of Y%?" mode above.
Divide the hours by the total hours and multiply by 100. Of a 24-hour day, 8 hours is (8 ÷ 24) × 100 = 33.33%. Of an hour, 30 minutes is (30 ÷ 60) × 100 = 50%. Use the "X is what % of Y?" mode.
"Ka" is Hindi/Urdu for "of", so it asks for 10 percent of 50,000: (10 ÷ 100) × 50,000 = 5,000. Enter 10 and 50000 in the calculator above for any such pair.
Yes. The calculator accepts both standard digits (0-9) and Arabic-Indic digits (٠-٩), with either . or ٫ as the decimal separator.