Terms of use

Using the site

Percentage Calculator is free to use, with no account and no sign-up. You may use it for personal, educational and commercial work alike. You may link to any page.

You may not scrape the site at a rate that degrades it for other people, republish it as your own, or use it to break the law.

No warranty

The calculators are provided "as is". They are tested, and every answer is shown with the arithmetic that produced it precisely so that you can check it — but we do not warrant that the site is free of error, or that it will be available without interruption.

Not professional advice

A percentage is arithmetic, not advice. Nothing here is financial, medical, legal, or academic advice. If a number matters — a loan, a dose, a grade, a tax return — verify it against the authority that governs it before you act on it.

Limitation of liability

To the extent the law allows, we are not liable for any loss arising from the use of this site or from reliance on a result it produced.

Content and links

The text, layout and code of this site belong to its authors. Where a page links out, the linked site is governed by its own terms, not these.

Changes

These terms may change. The date at the top of this page shows when they last did. Continued use of the site after a change means you accept the revised terms.

Contact

Questions, corrections and complaints go through the feedback form.