Terms of Use

Using the site

You're welcome to use our calculators and read our guides for personal, educational and professional purposes, free of charge. Please don't try to disrupt the service, scrape it at high volume or use it for anything unlawful.

Results are estimates

Our calculators perform mathematical calculations on the values you enter. We work hard to make them accurate and test them regularly, but we can't guarantee they are free of errors, and results depend entirely on the inputs you provide. You are responsible for checking results before relying on them, especially where money, safety or legal matters are involved.

Not professional advice

Nothing on this site is agronomic, legal or financial advice. See our disclaimer for details.

Content

The text, design and code of this site are our work. You may quote short passages with a link back. Please don't copy whole pages.

Links

We may link to other websites for further information. We're not responsible for their content.

Liability

To the extent permitted by law, we are not liable for any loss arising from use of the site or reliance on its results.

Changes

We may update these terms. Continued use of the site means you accept the current version.