Money
Percentage Calculator
Solve everyday percentage questions, including percent of a number, percentage change and discounts.
Result
30
(percentage ÷ 100) × number
How to use the Percentage Calculator
- Choose the percentage calculation you need.
- Enter both values.
- Read the instant result and formula.
How it works
The calculator converts percentages to decimals and applies the standard formula for the selected mode.
Formula
Percent of a number = (percentage ÷ 100) × number
Example
20% of 150 is 0.20 × 150 = 30.
Common uses
- Finding a sale discount
- Calculating a percentage increase
- Comparing a part with a whole