Terms of service
Last updated 3 September 2026
Acceptance
By using this site you agree to these terms. If you do not agree with them, please stop using the site.
Permitted use
You may use the calculator freely for personal, non-commercial purposes. You may not scrape the site at volume, resell access to it, or republish its content as your own.
You may not attempt to disrupt the site, interfere with other people's use of it, or use it in any way that breaks the law.
No warranty
The site is provided "as is" and "as available", without warranty of any kind. We do not guarantee that the figures shown are accurate, complete or current, or that the site will be free of errors or interruptions.
Limitation of liability
To the fullest extent permitted by law, we are not liable for any loss, injury or damage arising from your use of, or reliance on, this site or the estimates it produces. Read the health disclaimer before acting on any result.
Changes
These terms may be updated from time to time. Continued use of the site after a change means you accept the revised terms.