Terms of Use

Last updated: 2026-08-30

Use of the site

Percentage-calculator.io is free to use for any lawful purpose, personal or commercial. Don't abuse the service (automated scraping at disruptive volume, attempts to breach the infrastructure) and don't misrepresent its output as ours where you've modified it.

Accuracy and reliance

We work hard on correctness — the methodology page describes the exact-arithmetic engine and its test suite — but the site is provided "as is," without warranties of any kind. For decisions with real consequences (financial, legal, medical, academic grading), verify independently. Nothing on this site is financial, legal, or medical advice.

Content

Articles and other written content are © Percentage Calculator. You may quote reasonable excerpts with attribution and a link. Cited research remains the property of its publishers and is linked at the source.

Liability

To the maximum extent permitted by law, we are not liable for any damages arising from use of, or inability to use, this site or its results.

Changes

We may update these terms; the date above reflects the latest revision. Material changes are noted in the changelog.