Terms of Service
By using MuscleCalc, you agree to these terms. They are written to be read, so please do.
Last updated September 22, 2026
Information, not medical advice
Our calculators and articles provide general information and estimates based on published formulas and research. They are not medical, nutritional or fitness advice, and they do not replace a consultation with a doctor, registered dietitian or other qualified professional. Always seek professional advice before making significant changes to your diet or exercise, especially if you are pregnant, under 18, or have a medical condition. Never ignore professional advice because of something you read here.
Estimates can be wrong for you
Formulas describe averages. Your actual needs may differ because of genetics, health, medication, body composition and many other factors. You use the results at your own risk, and you are responsible for how you apply them. If a result seems wrong for you, trust how your body responds and a professional's advice over the calculator.
Training safely
Strength estimates, such as one-rep max values, are predictions. Use proper technique, warm up, and use a spotter or safety equipment before attempting heavy lifts.
Using our content
The text, design, code and graphics on MuscleCalc belong to us or our licensors. You may use the calculators and read the articles for personal, non-commercial purposes and share links to any page. Do not copy, republish or scrape substantial parts of the site without written permission.
Accuracy and availability
We work to keep our calculators correct and our content current, but we cannot guarantee that everything is always accurate, complete or available. We may change or remove features at any time.
Links and advertising
We link to other websites and may show third-party ads. We do not control and are not responsible for those websites, products or services.
Limitation of liability
To the fullest extent permitted by law, MuscleCalc is provided "as is", and we are not liable for any loss or damage arising from your use of the website or reliance on its content. Nothing in these terms limits liability that cannot be limited by law.
Changes to these terms
We may update these terms from time to time. The date at the top shows the latest version. Continuing to use the site after a change means you accept the updated terms.
Governing law
These terms are governed by the laws of Norway, without affecting any mandatory consumer rights in your country of residence.
Contact
Questions about these terms? Email musclecalc@gmail.com.