Online Percent Calculator

Online Percent Calculator is a free suite of accurate percentage tools in English, Turkish, German, French, and Chinese. Find X% of Y, percentage increase or decrease, reverse percentages, discounts, VAT and sales tax, tips, salary raises, grades, BMI, and dozens more. Every calculator shows the formula and a worked example so you can verify the math. Inputs stay in your browser. No account, no install, just fast, checkable results for shopping, school, and work.