Three focused modes for “what is 18% of 240,” “X is what % of Y,” and “percent change from A to B.” Tip, tax, discount, grade — one tool covers it all.
The Percentage Calculator is a free math tool. Calculate percent-of answers, X as a percent of Y, and percent change for tips, tax, discounts, grades, and quick everyday math. Runs directly in the browser with no account required.
Calculate percent-of answers, X as a percent of Y, and percent change for tips, tax, discounts, grades, and quick everyday math. It runs directly in your browser with no account required.
Open /percent-calculator, review the page output, and copy the generated result into your docs, tests, support notes, or debugging workflow.
This page is designed as a browser utility. Use the copy-friendly output when you need to move results into another workflow.
The Percentage Calculator is useful for developers, QA teams, support teams, operators, and content teams that need reliable math output without opening a heavier application.