🔥 BMR / TDEE / Calorie Deficit Calculator
Uses the Mifflin-St Jeor equation — the most validated formula for resting metabolic rate in modern adults.
ft
in
in
BMR
TDEE
Calorie Deficit
Basal Metabolic Rate — calories burned at complete rest
Formula: Mifflin-St Jeor (1990). Am J Clin Nutr. 51(2):241–7. Validated as most accurate predictive equation for modern adults by Frankenfield et al. (2005). J Am Diet Assoc. 105(5):775–89.
Total Daily Energy Expenditure — your actual daily calorie burn
Calories per day to hit your goal
⚠️ Warning: Your calculated intake falls below the safe minimum (1,200 cal/day for women, 1,500 cal/day for men). We’ve set your floor at the safe minimum. Please consult a registered dietitian or your healthcare provider before eating this low, especially on GLP-1 medications.
1 lb of fat ≈ 3,500 calories. A 500 cal/day deficit ≈ 1 lb/week loss. This is a guideline; individual results vary. Consult a healthcare provider before beginning any calorie restriction, especially on GLP-1 medication.
Get the weekly GLP-1 update
Price drops, insurance and Medicare changes, and new research, in one short email a week. Free. Unsubscribe anytime.
We never share your email. See our privacy policy.
Medical disclaimer: Content on OnSemaglutide.com is for informational purposes only and is not medical advice. Talk with a licensed healthcare provider before starting, stopping or changing any medication. Read the full disclaimer.