Terms of Service
Effective Date: January 1, 2026 • Last Updated: August 2026
1. Agreement to Terms
By accessing or using Calorie.day ("the Service"), you acknowledge that you have read, understood, and agreed to be bound by these Terms of Service. If you do not agree with any part of these terms, you should discontinue using the Service.
Calorie.day is strictly an informational and educational estimation tool. It is not a medical device and does not offer medical, nutritional, diagnostic, or clinical healthcare advice.
Calculations for Total Daily Energy Expenditure (TDEE), Basal Metabolic Rate (BMR), and macronutrient gram splits are theoretical estimations. Always seek the advice of a qualified physician, registered dietitian, or certified medical specialist before embarking on any diet, caloric deficit, aggressive surplus, or intense exercise regimen, especially if you have pre-existing medical conditions, eating disorders, or metabolic concerns.
3. Scientific Modeling & Formula Accuracy
The mathematical outputs generated on Calorie.day are based on established scientific literature:
- Mifflin-St Jeor Equation (1990): Validated standard for estimating Resting Energy Expenditure (REE) across the general population.
- Tinsley Equation (2018): Tailored estimation equation designed specifically for resistance-trained individuals and athletic populations.
- Physical Activity Multipliers (PAL): Standardized factors based on daily physical exertion levels.
Because human metabolism is influenced by genetics, gut microbiome, hormonal fluctuations, Non-Exercise Activity Thermogenesis (NEAT), and adaptive thermogenesis, real-world caloric requirements may vary by ±10-15% from mathematical predictions.
4. Permitted Use & Intellectual Property
You are granted a non-exclusive, revocable license to access Calorie.day for personal, non-commercial fitness reference and educational calculations. You agree not to:
- Interfere with, overload, or compromise the stability of our web servers through malicious automated scraping or denial-of-service attempts.
- Misrepresent Calorie.day outputs as certified medical evaluations or dietary prescriptions.
- Copy or reproduce the proprietary branding, design aesthetics, or original assets without prior written consent.
5. Disclaimer of Warranties & Limitation of Liability
Calorie.day is provided on an "AS IS" and "AS AVAILABLE" basis without warranties of any kind, whether express or implied.
Under no circumstances shall Calorie.day, its creators, contributors, or hosting partners be liable for any direct, indirect, incidental, consequential, or special damages arising out of your use of or inability to use this tool, including any physical injury, health outcome, or dietary consequence.
6. Changes to Terms
We reserve the right to modify these Terms of Service at any time. Continued use of the platform after updates are published constitutes your acceptance of the revised terms.
7. Contact Information
For inquiries regarding these Terms of Service, please visit our Contact Page or reach us via email at legal@calorie.day.