Your Metabolic Foundation
Discover your Basal Metabolic Rate – the calories your body burns just to keep you alive
BMR Calculator
Calculate your Basal Metabolic Rate - calories burned at complete rest
Enter your details to calculate your BMR
What is BMR?
The energy cost of keeping you alive
BMR (Basal Metabolic Rate) represents the minimum energy your body needs to maintain vital functions like breathing, circulation, cell production, and brain function while at complete rest.
Major Functions (70-80%)
Brain, heart, lungs, kidneys, liver working 24/7
Cellular Processes (20-30%)
Protein synthesis, cellular repair, temperature regulation
BMR Facts
Accounts for 60-75% of your total daily calories
Muscle burns 3x more calories than fat tissue
Decreases 1-2% per decade after age 30
Science Behind Your BMR
Multiple validated equations ensure accuracy
Mifflin-St Jeor
The most accurate for most women
Harris-Benedict
The original BMR formula (revised)
What Your BMR Tells You
The foundation for all your nutrition and fitness decisions
Minimum Needs
Never eat below your BMR long-term
Your metabolic floor
TDEE Foundation
Multiply by activity level for total needs
BMR × Activity = TDEE
Goal Setting
Set realistic and healthy targets
Sustainable approach
Factors That Influence Your BMR
Your BMR isn't just about age, weight, and height. Understanding these factors helps you make informed decisions about your health and fitness journey.
Increases BMR:
- • More muscle mass
- • Pregnancy & breastfeeding
- • Fever or illness
- • Cold temperatures
Decreases BMR:
- • Severe calorie restriction
- • Loss of muscle mass
- • Aging process
- • Certain medications