What is 20% of 150?
(20 ÷ 100) × 150 = 30
Input
20% of 150
Output
30
Calculators & Converters
Percentage Calculator
Solve common percentage problems: find X% of Y, reverse percentages, or measure percentage increase and decrease.
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How to Calculate a Percentage
Step 1
Enter your values
Choose a mode and provide the numbers for that formula.
Step 2
Calculate the result
The answer updates as you type.
Step 3
Review the formula
See the exact steps using your values.
Percentage Formula
- What is X% of Y?
- X is what percent of Y?
- Percentage increase / decrease
- Live formula breakdown
- Copy results
Calculation Modes
Input formats
- Numbers
- Percentages
Output formats
- Percentage results
Supported formats
- Numbers
- Percentages
Examples
What percentage is 30 of 150?
(30 ÷ 150) × 100 = 20%
Input
30 of 150
Output
20%
Percentage increase
((120 − 100) ÷ 100) × 100 = 20%
Input
From 100 to 120
Output
20% increase
Frequently Asked Questions
How do I calculate X% of Y?
Result = (Percentage ÷ 100) × Number. Example: 20% of 150 = 30.
How do I calculate percentage change?
((New Value − Original Value) ÷ Original Value) × 100. From 100 to 120 is a 20% increase.
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