Every person's body is unique, and calculating your Daily Energy Expenditure (TDEE) is the first step toward scientific weight management. Whether you are in the USA or anywhere else in the world, the fundamental math of "Calories In vs. Calories Out" remains the gold standard for fitness success.
1. What is BMR vs. TDEE?
Your Basal Metabolic Rate (BMR) is what your body burns just staying alive. When you add physical activity—walking, working, or hitting the gym—you get your Total Daily Energy Expenditure (TDEE). Our Calorie Calculator uses the Mifflin-St Jeor formula to provide a high-precision estimate of these numbers based on your age, weight, and gender.
2. The Deficit Decision
To lose weight, you generally need a deficit of about 500 calories per day from your maintenance level. This usually leads to a safe, sustainable weight loss of about 1 pound per week. Over-restricting can lead to muscle loss and metabolic slowdown, so precision is key. Use our tool to find your exact maintenance number before you start your journey.
3. Tracking for Success
Consistency is the secret weapon of the world's most successful athletes. By tracking your intake against your calculated needs for at least 3 weeks, you can identify patterns that might be holding you back. Gravity Lab processes all your health metrics locally, so your personal physical data stays on your device—not our servers.