Calories & Nutrition
Calorie Calculator
Estimate the daily calories you need to maintain, lose, or gain weight, based on your TDEE and goal.
What your result means
Use the suggested number as a starting point, then adjust based on real-world results over 2–4 weeks.
How we calculate this
BMR via Mifflin-St Jeor, multiplied by your activity factor, then scaled by your goal.
Limitations
All calorie equations estimate. Weigh weekly under consistent conditions and trust the trend over any single day.
When to talk to a professional
Speak to a registered dietitian before going below 1,500 kcal/day, or if you have any history of disordered eating.
Frequently asked questions
Related calculators
Related guides
References
- World Health Organization. https://www.who.int
- NHS — Health A to Z. https://www.nhs.uk
- Centers for Disease Control and Prevention. https://www.cdc.gov
Browse all calculators or read our evidence-based guides.