Percentage Calculator
Find what a percentage of a number is, instantly, by entering a value and a percentage. Works for discounts, tips, test scores, statistics, or any everyday percentage question.
About this percentage calculator
Percentage calculations come up constantly, working out a discount, a tax amount, a grade, or a statistic you read somewhere. This calculator gives you the answer the moment you type, with the formula shown below for anyone who wants to check it by hand.
How percentage calculator works
The formula is: Result = (Value × Percentage) ÷ 100. For example, 20% of 150 is (150 × 20) ÷ 100 = 30.
Common uses
- Working out a discount or tax amount
- Calculating a test or exam score
- Checking a statistic from a news article
- Splitting a percentage-based commission or tip
How to use this tool
- Enter the value.
- Enter the percentage.
- The result updates instantly.
What to know before using it
This tool calculates straightforward percentage-of-a-value problems. For percentage increase or decrease between two numbers, use the Percentage Change Calculator instead.
Privacy and browser-first processing
This tool runs entirely in your browser using JavaScript. Nothing you enter is uploaded or stored.
Frequently asked questions
How do I calculate 20% of 150?
Multiply 150 by 20, then divide by 100: (150 × 20) ÷ 100 = 30. So 20% of 150 is 30.
What is the basic percentage formula?
Percentage of a value = (Value × Percentage) ÷ 100.
Does this work for any country's currency?
Yes, this is a pure number calculation and works the same whether you are working in USD, INR, or any other currency.