What is BMR and Why Does It Matter?
Your Basal Metabolic Rate (BMR) is the number of calories your body burns while at complete rest. Even if you stayed in bed all day, your body needs energy to breathe, circulate blood, and repair cells. Knowing your BMR is the first step to losing or gaining weight effectively.
The BMR Formula (Mifflin-St Jeor)
We use the Mifflin-St Jeor equation, which is considered the most accurate standard for BMR calculations in 2025.
Women: (10 × weight in kg) + (6.25 × height in cm) - (5 × age) - 161
Frequently Asked Questions
Yes. As you get older, your metabolic rate naturally slows down. This is why many people find they gain weight more easily in their 30s and 40s compared to their 20s, even if they eat the same amount.
No. BMR is what you burn at rest. TDEE (Total Daily Energy Expenditure) is your BMR plus the calories you burn from walking, working, and exercising. To lose weight, you must eat below your TDEE, not necessarily below your BMR.