BMR & TDEE Calculator
Your BMR
Estimated TDEE (Maintenance)
BMR Calculator Guide
Basal Metabolic Rate (BMR) is the number of calories your body needs to accomplish its most basic (basal) life-sustaining functions at rest. We use the Mifflin-St Jeor equation, considered the gold standard for accuracy.
Calculation for a 25-year-old Male:
Energy Baseline
Know exactly how much energy your body requires just to keep functioning.
Weight Goals
The starting point for planning weight loss (calorie deficit) or gain (surplus).
Smart Fitness
Personalize your nutrition plan based on your unique metabolic speed.
Q1: What exactly is BMR?
It stands for Basal Metabolic Rate—the number of calories your body burns while performing basic life-sustaining functions like breathing.
Q2: Is BMR the same for everyone?
No. It depends heavily on your age, gender, height, and weight. Generally, heavier and taller individuals have a higher BMR.
Q3: Does BMR change with activity?
BMR is your rate at rest. To get your total daily needs, you must multiply BMR by an activity factor (this is called TDEE).
Q4: Why decreases BMR with age?
As you age, muscle mass tends to decrease and fat accounts for a larger percentage of weight, slowing down calorie burning.