Everything You Need to Know About BMR & TDEE

What is Basal Metabolic Rate (BMR)?

BMR is the number of calories your body needs to accomplish its most basic (basal) life-sustaining functions. Even when you are resting in bed, your body burns calories to pump blood, breathe, and produce cells. Knowing your BMR is the starting point for any weight loss or muscle gain journey.

Mifflin-St Jeor vs. Harris-Benedict

Our tool allows you to switch between the two most respected formulas in dietetics:

• Mifflin-St Jeor: Considered the "Gold Standard" today. It is more accurate for the modern lifestyle and is the default setting in our calculator.
• Harris-Benedict: The original formula. It tends to overestimate calorie needs slightly, making it a better choice for very active athletes or those with physically demanding jobs.

How to Use Macros for Results

Simply counting calories isn't always enough. Our tool breaks down your calories into Macros (Proteins, Carbohydrates, and Fats). Following these targets helps ensure that weight lost comes from fat stores, not muscle tissue.