1. Acceptance of these terms
By accessing instantcaloriecalculator.com (the "Site") and using the calorie calculator, macro planner, zigzag schedules, energy converter, guides, or FAQs (collectively, the "Tool"), you agree to these Terms and Conditions and to our Privacy Policy. If you don't agree, please don't use the Site.
2. What the Tool is
The Tool is a free, educational estimator. It computes Basal Metabolic Rate (BMR) with published equations (Mifflin-St Jeor, Revised Harris-Benedict, Katch-McArdle), multiplies by an activity factor to estimate Total Daily Energy Expenditure (TDEE), and derives illustrative deficit, surplus, macronutrient, and calorie-cycling targets. All calculations run in your browser; we provide no accounts, coaching, meal plans, or personalized medical services.
3. Not medical advice
Results are for informational and educational purposes only and are not medical advice, diagnosis, or treatment. They are not a substitute for professional healthcare consultation. Always consult a certified physician or registered dietitian before beginning any calorie-restricted diet — especially very-low-calorie diets (generally under 1,500 kcal/day for men or 1,200 kcal/day for women), and if you are pregnant, breastfeeding, managing an eating disorder, diabetes, thyroid disease, cardiovascular disease, or any other condition, or cooking for a child or teenager.
You use the estimates at your own risk and are solely responsible for decisions about your diet, training, and health.
4. Accuracy of estimates
BMR equations and activity multipliers are population averages validated in research — they cannot capture your exact metabolism, body composition, NEAT, illness, medication, or tracking errors. Treat every number as a starting point: follow it consistently for 2–3 weeks, observe the trend in your weight and performance, and adjust. We make no warranty that following the targets will produce any particular amount of weight loss, gain, or maintenance.
5. Acceptable use
- Use the Tool for lawful, personal, non-harmful purposes only.
- Don't attempt to disrupt the Site, scrape it aggressively, probe for vulnerabilities, or misrepresent it as professional medical guidance.
- Don't use the Tool to set targets for someone else's medical treatment or to encourage disordered eating.
- Automated bulk access that degrades the Site for others is prohibited.
6. Intellectual property
The Site's design, text, and code are owned by us or our licensors and protected by applicable intellectual-property laws. You may view, print, and share links to our pages for personal, non-commercial use with attribution. You may not copy substantial portions of the Site, rebrand it as your own, or resell access to it without written permission.
7. Third-party services
The Site loads fonts from Google Fonts, which is governed by Google's own terms and privacy policy. We are not responsible for third-party services, email providers you use to contact us, or any external sites you visit from here.
8. Limitation of liability
To the maximum extent permitted by law, the Site and Tool are provided "as is" without warranties of any kind, and we disclaim all liability for any loss, injury, or damage arising from your use of or reliance on the estimates — including health outcomes, missed goals, or decisions made based on the numbers. Nothing in these terms limits liability where the law does not allow it.
9. Changes and termination
We may update these terms as the Site evolves; the "Last updated" date above will reflect changes, and continued use after changes means you accept them. We may modify, suspend, or discontinue any part of the Site at any time without notice.
10. Contact
Questions about these terms? Email contact@instantcaloriecalculator.com or use our contact page.