Terms and conditions

Starter terms. Replace [Your legal name] and [Your country or state], and have them reviewed. Last updated 6 October 2026.

These terms cover Free Web Calculator at freewebcalculator.com, operated by [Your legal name]. Using the calculator means you accept them.

What the results are

The calculator evaluates the expression described in the FAQ: multiplication and division before addition and subtraction, percent as documented there, and trigonometry in degrees. Results are rounded. They are a convenience, not a certified figure for engineering, medicine, exams that forbid a particular device, tax, or accounting. Check important numbers with a second method.

Acceptable use

You may use the calculator for ordinary arithmetic. You may not misuse the site, attempt to disrupt it, or present its output as our professional opinion. You are responsible for how you use a result.

Intellectual property

The design, text, and code of this site belong to the operator. Your sums are yours. Short quotations with a link are fine. Copying the calculator into another product is not.

Advertising

Third-party ads, including Google AdSense, may appear later. An advertisement is not part of a calculation. Cookies are described in the privacy notice.

Disclaimer and liability

The calculator is provided as available. Rounding, browser differences, and a mis-read percent key can change a result. To the extent the law allows, we are not liable for losses that follow a calculation. Nothing here excludes liability the law does not let us exclude.

Changes and law

We may change the keys or these terms. The date on this page moves when the terms change. The laws of [Your country or state] govern, and courts there have jurisdiction except where the law gives you another forum.