Percentages client-side ?
How to use PercentagesThis percentage calculator gathers the most common operations in one place. You can compute a percentage of a value, find what percentage one number is of another, apply an increase or a discount, or recover the original value before a change. Each result appears instantly as you type your numbers.
It is useful for sales, tips, grades, growth rates or splitting a budget. The calculation happens directly in your browser, with no data sent and no sign-up required
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This percentage calculator gathers the most common operations in one place. You can compute a percentage of a value, find what percentage one number is of another, apply an increase or a discount, or recover the original value before a change. Each result appears instantly as you type your numbers. It is useful for sales, tips, grades, growth rates or splitting a budget. The calculation happens directly in your browser, with no data sent and no sign-up required
This percentage calculator gathers the most common operations in one place
How to use Percentages
This percentage calculator gathers the most common operations in one place. You can compute a percentage of a value, find what percentage one number is of another, apply an increase or a discount, or recover the original value before a change. Each result appears instantly as you type your numbers. It is useful for sales, tips, grades, growth rates or splitting a budget. The calculation happens directly in your browser, with no data sent and no sign-up required
Frequently asked questions
How do I calculate a percentage of a number?
Multiply the number by the percentage divided by 100. For example, 20% of 150 equals 150 times 0.20, which is 30
How do I find the percentage change between two values?
Subtract the starting value from the ending value, divide by the starting value, then multiply by 100 to get the change as a percentage
How do I find the price before a discount?
Divide the discounted price by 1 minus the discount rate. For a 25% discount, divide the shown price by 0.75
Are the calculations private?
Yes, everything runs in your browser. No value is sent to or kept on a server