Terms of use

Free to use

Every tool on Smartntools is free for personal and commercial use. You may use the results — a converted value, a generated password, a resized image, a colour palette — however you like, with no attribution required.

Provided as is

The tools are provided as is, without warranty of any kind. We aim for correctness and publish the formula each calculator uses, but we cannot guarantee that every result is free of error, nor that the site is always available.

To the fullest extent permitted by law, we are not liable for any loss arising from the use of these tools or from reliance on their output.

Not professional advice

The health calculators (BMI, pregnancy, age) provide general reference values and are not a medical diagnosis. The financial calculators (compound interest, loan payments, fuel and tip costs) are estimates based on the figures you enter and are not financial advice. Consult a qualified professional before acting on anything with real consequences.

Acceptable use

Do not use the link shortener for malware, phishing, spam or any illegal content. Short links found to be abusive are deleted without notice, and all short links expire after seven days regardless.

Do not attempt to disrupt the service, overload it with automated requests, or use it in a way that harms other users.

Changes

Tools may be added, changed or removed, and these terms may be updated. The date at the bottom of this page always reflects the current version.