Terms of Use

Last updated: July 2026

These terms cover using this percentage calculator, kept plain. By using the site you agree to them; if you would rather not, simply don't use it.

What it is

A free set of percentage calculators, for finding a percent of a number, percentage change, increase, decrease and more. Use it for personal or work purposes at no cost.

Accuracy

The maths here is standard and we take care with it, but we can't promise a result fits your exact situation. For anything with a real consequence, a bill, a grade, a financial figure, check the number before you act on it.

Fair use

Everyday use has no limits. Please don't flood the site with bots, copy it wholesale, overload it, or use it unlawfully, so it stays quick for the next visitor.

Ownership

The design, code and wording are ours. The plain maths, that 15% of 200 is 30, belongs to everyone and you may quote it freely. Just don't copy the whole site and present it as your own.

Links

We link to references. Once you follow a link you are on another site under its own rules and privacy terms, not ours.

Availability and liability

The site is offered as it is and as available; features may change or pause without notice. To the fullest extent the law permits, it carries no warranties, and we are not responsible for losses arising from its use or from any downtime.

Updates

We may adjust these terms; the version on this page, dated on top, is always the one that applies.

Contact

Questions? Email hello@percent-calculator.org.