Percentage Calculator
Calculate percentages, find percentage changes, and solve percentage problems easily.
Basic Percentage Calculator
% of
0
is what % of
0%
How to calculate percentages:
• To find X% of Y: multiply Y by X/100
• To find what % X is of Y: divide X by Y and multiply by 100
Percentage Change Calculator
Enter values to calculate
How to calculate percentage change:
• Percentage change = ((New value - Original value) / Original value) × 100
• A positive result indicates an increase
• A negative result indicates a decrease
Percentage Distribution Calculator
Calculate how a total is distributed as percentages.
Enter values to calculate
How percentage distribution works:
• Each value is shown as a percentage of the total sum
• The percentages will always add up to 100%
Percentage Tips
- To calculate a 10% tip, simply move the decimal point one place to the left. For example, 10% of $45.50 is $4.55
- For 20% tip, calculate 10% and double it. For 15%, calculate 10% and add half of that amount.
- To find the original price after a discount, divide the sale price by (1 - discount/100).
- To figure out what percentage a number is of another, divide the first number by the second and multiply by 100.
Common Percentage Conversions
| Fraction | Percentage |
|---|---|
| 1/2 | 50% |
| 1/3 | 33.33% |
| 1/4 | 25% |
| 1/5 | 20% |
| 1/8 | 12.5% |
| 1/10 | 10% |
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