Why this site exists
Percentages.in started as a small collection of calculators built to answer the kind of everyday math questions that don't need a spreadsheet — working out a tip, checking a discount at checkout, or figuring out how much of a price is tax. Every tool on this site runs entirely in your browser, gives an instant answer as you type, and doesn't require an account, a download, or any personal information.
What we believe in
We keep every calculator free, fast, and free of unnecessary clutter. Each tool page also explains the formula behind the calculation and walks through a worked example, because we think it's just as useful to understand how a number was reached as it is to get the number itself.
What's next
We're steadily adding new calculators based on the kinds of everyday math people actually search for. If there's a calculator you'd like to see, you're welcome to reach out through our contact page.