Question
How do I calculate a percentage?
You usually divide the part by the whole, then multiply by 100 to express the result as a percentage.
Math
Use OmniCalc's percentage calculator to find percentages, increases, decreases, and simple percent comparisons quickly.
Percentage calculator
Switch between three everyday percentage tasks without leaving the page.
Choose a percentage mode
What is X% of Y?
Why this result matters
Multi-use everyday math helper for common percentage tasks. Use the tool above to enter a few clear inputs and get a practical answer you can use right away.
Formula and method
Percentage calculations usually compare a part to a whole, or compare one number against another to measure change.
Example
This calculator helps with everyday tasks like discount checks, score comparisons, tax adjustments, and fast percentage increases.
FAQ
Short answers to the questions people often ask before or after using the tool.
Question
You usually divide the part by the whole, then multiply by 100 to express the result as a percentage.
Question
Percentage increase compares the difference between the new and old values against the original value, then expresses that change as a percentage.
Question
Divide the first number by the second, then multiply by 100.
Related calculators
If the next question is close to this one, these are the best pages to open next.
Financial
Use OmniCalc's VAT calculator to add VAT, remove VAT, and compare gross and net prices quickly.
Education
Use OmniCalc's GPA calculator to quickly estimate grade point average for school, college, or university coursework.
Financial
Use OmniCalc's loan calculator to estimate monthly repayments, interest costs, and the total amount you will pay over time.