The terms, and the one that actually matters.

These terms govern your use of weighttimeline.com (the "site"), which is run by one person, Bibek Sharma ("I", "me"). By using the calculator you accept them. If you do not, please do not use the site — that is the entire enforcement mechanism, since there is no account to suspend.

1. Not medical advice

The site is an information and educational tool. It does not provide medical advice, diagnosis or treatment, and it is not a substitute for professional healthcare. I am not a doctor, dietitian, nutritionist or clinician, and no clinician-patient or professional relationship of any kind is created by your using this calculator.

Always consult a qualified healthcare provider before starting, changing or stopping any diet, calorie target, fasting schedule or exercise programme, and before acting on anything this site outputs. Never disregard or delay seeking professional medical advice because of something you read here.

Professional advice is particularly important, and this tool is particularly unsuitable as a substitute for it, if you:

• are pregnant, breastfeeding or trying to conceive;
• have or have had an eating disorder, or any disordered relationship with food, exercise or body weight;
• live with diabetes, thyroid disease, kidney or liver disease, a cardiac condition or any other chronic or metabolic illness;
• take medication that affects weight, appetite, insulin or metabolism;
• are under 18, over 65, or have had bariatric surgery or another procedure affecting how you absorb energy;
• are considering an intake below roughly 1,200 kcal per day, or a rate of loss beyond 1% of your bodyweight per week.

The site's danger indicator is a crude heuristic based on population-level thresholds, not a safety certification. Its absence does not mean a plan is safe for you, and it cannot assess your individual circumstances. If you are experiencing a medical emergency, contact your local emergency services.

2. The projections are estimates

Every figure the site produces — goal dates, plateau weeks, calorie targets, macronutrient splits, BMI positions and daily trajectories — is the output of a mathematical model built on published population-level formulas. It is a projection, not a prediction, and certainly not a measurement of your body.

Specifically: the Mifflin-St Jeor equation carries a meaningful margin of error for any individual; the adaptive thermogenesis and NEAT coefficients are reasonable published estimates rather than values fitted to you; and the model cannot account for genetics, body composition, medical conditions, medication, sleep, stress, hydration or measurement error in your own inputs. Your actual results will differ, potentially substantially. I make no warranty that any projected outcome, date or rate will be achieved.

BMI in particular is a crude population screening ratio. It does not distinguish muscle from fat and misclassifies athletic and older bodies routinely. Treat it accordingly.

3. Permitted use

You may use the site for your own personal, informational purposes, free of charge. You may not:

• present the site's output as medical, clinical or professional dietary advice to anyone else;
• resell access to the site, or wrap it in a paid product or service without my written permission;
• scrape, mirror or systematically copy the site at a scale that degrades it for others, or attempt to interfere with its availability, security or integrity;
• remove, obscure or misrepresent the medical disclaimers or the accuracy limitations described above when quoting or reproducing the output.

Quoting a figure, sharing a screenshot or referencing the method in journalism, education or research is fine, and attribution to weighttimeline.com is appreciated.

4. Intellectual property

The site's design, written content, source code and the specific implementation of the simulation engine are owned by me and protected by copyright. The underlying scientific formulas are not mine and I claim nothing over them — Mifflin-St Jeor and the physiology of adaptive thermogenesis are published science, freely usable by anyone. What is protected is this particular expression of them.

The numbers the calculator produces from your own inputs are yours. Do as you like with them.

5. No warranty

The site is provided "as is" and "as available", without warranties of any kind, whether express or implied, including any implied warranties of merchantability, fitness for a particular purpose, accuracy or non-infringement. I do not warrant that the site will be uninterrupted, error-free, or free of defects, or that any calculation is accurate or complete.

It is a free tool with no uptime commitment. It may be changed, taken offline or discontinued at any time without notice.

6. Limitation of liability

To the fullest extent permitted by law, I am not liable for any loss, injury, illness, or direct, indirect, incidental, consequential or special damages arising from your use of the site or reliance on its output — including any health outcome, dietary decision or financial loss connected to a projection you read here.

You use the site at your own risk, and you are responsible for decisions you make about your own diet, exercise and health. Where liability cannot be excluded by law — including liability for death or personal injury caused by negligence, or for fraud — nothing in these terms limits it. Some jurisdictions do not allow certain exclusions, so parts of this section may not apply to you.

7. External links

The site links to third-party resources, such as published research and the NIH Body Weight Planner. Those are provided as references only. I do not control them, are not responsible for their content or availability, and linking to them is not an endorsement of any product or service they may contain.

8. Privacy

Everything you enter into the calculator is processed in your browser and never transmitted to me. If you press Save, your figures are written to your own browser's local storage so the plan is there when you return; that copy stays on your device, is not sent anywhere, and Reset deletes it. Exported JSON files are written to your own downloads folder. The site uses Google Analytics to measure anonymous traffic and Google AdSense to serve advertisements, which set cookies and identifiers but receive none of your calculator inputs. The privacy policy sets out the detail, including how to opt out and everything stored locally on your device.

9. Changes to these terms

I may revise these terms. The current version always appears on this page with its revision date at the top, and continuing to use the site after a change means you accept the revised terms. There is no mailing list to notify you through, since I hold no contact details.

10. Governing law

These terms are governed by the laws applicable in the operator's place of establishment, without regard to conflict-of-law rules, and the courts there have non-exclusive jurisdiction over any dispute. If you are a consumer, this does not deprive you of the protection of the mandatory consumer law of your own country of residence, nor of the right to bring proceedings there where local law grants it.

11. General

If any provision of these terms is found unenforceable, the remainder stays in effect. My failure to enforce a provision is not a waiver of it. These terms, together with the privacy policy, are the entire agreement between you and me regarding the site.

Contact

Questions about these terms can go to admin@weighttimeline.com, or via the contact page.