BMR Calculator
Calculate your Basal Metabolic Rate (BMR) - the number of calories your body burns at rest.
Profile
BMR Result
What Your BMR Means
Your BMR is the number of calories your body needs to maintain basic functions at rest. To lose weight, you need to consume fewer calories than your BMR + activity calories.
Result Interpretation
Enter your details to see your BMR result and interpretation.
Authority Source
This calculator uses the Mifflin-St Jeor equation, which is the most accurate BMR formula according to the American Dietetic Association.
BMR Standards by Ethnicity
Compare health standards across major US ethnic groups
| Ethnic Group | Notes |
|---|---|
| Asian American | May have slightly lower BMR due to smaller body size |
| White/Caucasian | Standard Mifflin-St Jeor formula |
| African American | May have higher BMR due to higher muscle mass |
| Hispanic/Latino | Similar BMR but different body composition |
| Native American | BMR varies by tribal group |
These standards are based on CDC, WHO, and NIH research. Individual health assessments may vary. Consult a healthcare provider for personalized advice.
Real-Life Case Studies
Learn from real people's health journeys
John's Journey to Healthy BMI
John, 45, 5'9", 210 lbs
Initial Status
Obese
BMI: 31.8
Goal Status
Normal
BMI: 24.5
Changes Made
- Reduced daily calorie intake by 500 kcal
- Increased physical activity to 150 mins/week
Results
- Lost 45 lbs over 6 months
- BMI reduced from 31.8 to 24.5
Maria's Body Fat Transformation
Maria, 32, 5'5", 165 lbs
Initial Status
Overfat
Body Fat: 38%
Goal Status
Fit
Body Fat: 28%
Changes Made
- Started strength training 3x/week
- Added HIIT cardio 2x/week
Results
- Body fat decreased from 38% to 28%
- Lean muscle mass increased by 8 lbs
Chen's Asian BMI Awareness
Chen, 35, 5'8", 160 lbs
Initial Status
Overweight (Asian)
BMI: 25.2
Goal Status
Normal (Asian)
BMI: 22
Changes Made
- Adopted portion control
- Incorporated daily walking
Results
- BMI reduced from 25.2 to 21.8
- Lowered risk of type 2 diabetes
Understanding BMR
What BMR Measures
Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions at rest. This includes breathing, cell production, and organ function.
Factors Affecting BMR
BMR is influenced by muscle mass, body size, age, and gender. Muscle tissue burns more calories at rest than fat tissue, so individuals with more muscle have higher BMR.
Mifflin-St Jeor Equation
This calculator uses the Mifflin-St Jeor equation, which is considered the most accurate formula for estimating BMR. It accounts for weight, height, age, and gender.
Using BMR for Weight Management
Your BMR is the foundation for determining daily calorie needs. To lose weight, consume fewer calories than your TDEE (BMR + activity). To gain weight, consume more than your TDEE.
Real-Life Case Studies
Learn from real people's health journeys
John's Journey to Healthy BMI
John, 45, 5'9", 210 lbs
Initial Status
Obese
BMI: 31.8
Goal Status
Normal
BMI: 24.5
Changes Made
- Reduced daily calorie intake by 500 kcal
- Increased physical activity to 150 mins/week
Results
- Lost 45 lbs over 6 months
- BMI reduced from 31.8 to 24.5
Maria's Body Fat Transformation
Maria, 32, 5'5", 165 lbs
Initial Status
Overfat
Body Fat: 38%
Goal Status
Fit
Body Fat: 28%
Changes Made
- Started strength training 3x/week
- Added HIIT cardio 2x/week
Results
- Body fat decreased from 38% to 28%
- Lean muscle mass increased by 8 lbs
Chen's Asian BMI Awareness
Chen, 35, 5'8", 160 lbs
Initial Status
Overweight (Asian)
BMI: 25.2
Goal Status
Normal (Asian)
BMI: 22
Changes Made
- Adopted portion control
- Incorporated daily walking
Results
- BMI reduced from 25.2 to 21.8
- Lowered risk of type 2 diabetes
Understanding BMR
What BMR Measures
Basal Metabolic Rate (BMR) is the number of calories your body needs to maintain basic physiological functions at rest. This includes breathing, cell production, and organ function.
Factors Affecting BMR
BMR is influenced by muscle mass, body size, age, and gender. Muscle tissue burns more calories at rest than fat tissue, so individuals with more muscle have higher BMR.
Mifflin-St Jeor Equation
This calculator uses the Mifflin-St Jeor equation, which is considered the most accurate formula for estimating BMR. It accounts for weight, height, age, and gender.
Using BMR for Weight Management
Your BMR is the foundation for determining daily calorie needs. To lose weight, consume fewer calories than your TDEE (BMR + activity). To gain weight, consume more than your TDEE.