Terms of service.

What Years Gained is

Years Gained is a research-backed longevity calculator at yearsgained.com. It is provided for informational and entertainment purposes only. Nothing on this site is medical, financial, legal, or professional advice. The calculator estimates based on inputs you provide and general assumptions from published research; it does not account for your specific health situation. If you’re seeking medical advice, talk to a licensed healthcare professional.

By using yearsgained.com, you agree to these Terms. If you don’t agree, don’t use the site.

What we don't do

We don’t diagnose conditions. We don’t prescribe treatments. We don’t recommend medications, supplements, or specific medical tests. We don’t replace doctors, therapists, or any other licensed professional. The numbers we show you are statistical estimates from population research, not predictions about your specific life.

Acceptable use

You may use Years Gained for personal, non-commercial use. Don’t scrape the site, attempt to circumvent rate limits, attempt to access other users’ data, attempt to compromise the security of the service, or use the calculator’s output to make medical or commercial decisions about other people without their consent.

If you’re interested in embedding the calculator on your own site, see For your site. The embeddable widget will have its own commercial terms.

No warranty, no liability

Years Gained is provided “as is” without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose, and non-infringement.

To the fullest extent permitted by law, we are not liable for any damages — consequential, incidental, indirect, or otherwise — arising from your use of the site or your reliance on its output. The numbers shown by the calculator are estimates, not promises.

Intellectual property

The site’s code, design, and editorial content are owned by Years Gained or its licensors. The cited research and government health data linked from the site belong to their respective publishers. You may share screenshots of your own results for personal use, including via the share studio.

Changes

We may update these Terms over time. The “Last updated” date at the top reflects the most recent change. Continued use of the site after a change constitutes acceptance of the updated terms.

Contact

Questions about these Terms? Email hello@yearsgained.com.