How to calculate percentages online
Learn percentage of, increase/decrease, and reverse percentage—then compute them free online.
Common percentage problems
People usually need: what is X% of Y, what percent is X of Y, or what is the value after a percent increase or discount. Mixing these up causes pricing and grade mistakes.
Use the percentage calculator
Open the Percentage Calculator, pick the mode that matches your question, enter the numbers, and read the result. Calculations run locally for quick classroom or commerce checks.
Related money tools
For store discounts use the Discount Calculator; for India tax estimates see the GST Calculator; for tips use the Tip Calculator.