Basal Metabolic Rate Calculator.
Find your Basal Metabolic Rate (BMR) with Mifflin-St Jeor and Katch-McArdle equations. Understand the minimum calories your body needs to survive at rest.
Your BMR Results.
Your Basal Metabolic Rate (BMR) is the baseline energy required to sustain vital organ functions at rest.
Resting Calorie Burn
Energy burned if you rested in bed all day without physical movement.
1756 kcal/day
Medical standard based on age, height, and weight.
73 kcal/hr
Average baseline calories burned per hour.
1.22 kcal/min
Average baseline calories burned per minute.
What is Basal Metabolic Rate (BMR)?
Your **Basal Metabolic Rate (BMR)** represents the minimum amount of energy (in calories) your body needs to survive at complete rest. Even if you laid in bed all day without moving a single muscle, your body would still need these calories to power basic life-support systems, such as:
- Pumping blood through your circulatory system
- Inhaling and exhaling air through your respiratory system
- Repairing and growing tissues and cells
- Maintaining standard internal body temperature
- Regulating hormones and metabolic functions
BMR Formulas Used by CalorieBlueprint
CalorieBlueprint employs the most accurate metabolism equations available to estimated BMR:
Mifflin-St Jeor Equation (Standard default)
Developed in 1990, it remains the medical standard for calculating calorie needs.
Men: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) + 5
Women: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) - 161
Katch-McArdle Formula (Fallback if body fat is provided)
If you input your body fat percentage, we calculate your BMR based on Lean Body Mass (LBM) instead of total weight. This is highly accurate for muscular athletes.
LBM = weight in kg × (1 - body fat % / 100)
BMR = 370 + (21.6 × LBM)