Welcome to Biohack Tools ("we", "us", "our"), accessible at biohack-tools.com. These Terms of Use explain the rules for using our website and tools. By accessing or using the site, you agree to be bound by them in full. Please read them carefully, as they include important limits on our liability and your use of the tools.
By using biohack-tools.com, you confirm that you are at least 16 years old and that you accept these Terms of Use in full. If you are under 18, you may only use the site with the involvement of a parent or guardian. If you do not agree with any part of these terms, you must not use this website.
Biohack Tools provides free, browser-based health and biohacking calculators and tools ("Tools") for informational and educational purposes only. Our Tools include, but are not limited to, calculators for BMI, hydration, calories, fasting, electrolytes, heart rate zones, grip strength, and biological age.
Every result our Tools produce is an estimate based on generalised formulas and publicly available research. These estimates cannot account for your individual medical history or circumstances, and they do not constitute medical advice, diagnosis, or treatment of any kind.
The content and tools on biohack-tools.com are not a substitute for professional medical advice, and nothing on this site should be treated as such. Always consult a qualified doctor, dietitian, or other healthcare provider before making any decision about your health, diet, exercise, fasting, sauna use, supplementation, or electrolyte intake, and before acting on any result from our Tools. This is especially important if you have a pre-existing medical condition, are pregnant or breastfeeding, are under 18, are elderly, or take any medication.
Some of the activities our Tools relate to — including fasting, calorie restriction, intense exercise, and heat exposure — carry real health risks and are not suitable for everyone. You use our Tools and act on their results entirely at your own risk. Never disregard or delay seeking professional medical advice because of something you read or calculated on this site. If you think you may have a medical emergency, contact your doctor or emergency services immediately.
Biohack Tools does not require you to create an account to use any of our Tools. All calculations are performed locally in your browser. We do not collect, store, or transmit any of the personal health information you enter into our Tools.
For full details on how we handle data, please see our Privacy Policy.
All content on biohack-tools.com — including the text, graphics, tool designs, formulas as presented, code, layout, and branding — is the property of Biohack Tools or its licensors and is protected by applicable intellectual property laws.
You may use our Tools for your own personal, non-commercial use. You may not copy, reproduce, distribute, modify, resell, scrape, or create derivative works from any part of this website without our prior written consent.
You agree not to:
We work to keep the formulas and content on biohack-tools.com accurate and up to date. However, we provide everything on this site "as is" and "as available", and we make no warranties — express or implied — regarding the completeness, accuracy, reliability, or suitability of any tool, result, or information on this website.
Scientific understanding of health and biohacking changes quickly, and results from our Tools may not always reflect the most current research. Always verify any result with a qualified professional before relying on it.
To the fullest extent permitted by applicable law, Biohack Tools and its owner shall not be liable for any direct, indirect, incidental, consequential, special, or punitive damages of any kind arising from or connected to your use of, or inability to use, this website or its Tools. This includes, without limitation, any injury, illness, loss, or harm resulting from reliance on any result, formula, or information provided on the site, whether based on contract, negligence, or any other legal theory, even if we have been advised of the possibility of such damages.
Where liability cannot be excluded by law, it is limited to the maximum extent permitted by that law.
Our website may contain links to third-party websites and may display third-party advertising for reference or informational purposes. We have no control over the content, accuracy, products, or practices of those sites or advertisers, and we accept no responsibility for them or for any loss or damage that may arise from your use of them. Visiting or relying on any third party is at your own risk, and their own terms and policies apply.
As an EU-based service, we are committed to compliance with the General Data Protection Regulation (GDPR). Because we do not collect or store personal data from visitors using our Tools, most GDPR rights — such as the right to access, rectify, or erase your data — do not arise in the context of tool usage.
If you have any questions about how we handle data, or wish to exercise your rights, you can contact us via our Contact page.
We may update or modify these Terms of Use at any time to reflect changes to our site, our practices, or the law. Any changes take effect immediately upon posting to this page, with the "Last updated" date revised accordingly. Your continued use of the website after changes are posted means you accept the revised terms.
These Terms of Use are governed by and construed in accordance with the laws of the Netherlands. Any disputes arising from these terms or from your use of this website shall be subject to the exclusive jurisdiction of the competent courts of the Netherlands, unless mandatory local consumer law provides otherwise.
If you have any questions about these Terms of Use, please contact us through our Contact page.