BMI/BMR Calculator
Calculate your Basal Metabolic Rate and Body Mass Index
Please Enter Your Information
Your BMI/BMR Calculator Results
Daily calorie needs based on activity level
| Activity Level | Calorie |
|---|---|
| Sedentary: little to no exercise | |
| Exercise 1-3 times/week | |
| Exercise 4-5 times/week | |
| Daily exercise or intense exercise 3-4 times/week | |
| Intense exercise 6-7 times/week | |
| Very intense exercise daily, or physical job |
Exercise: 15-30 minutes of elevated heart rate activity.
Intense exercise: 45-120 minutes of elevated heart rate activity.
Very intense exercise: 2+ hours of elevated heart rate activity.
BMI Calculator
Use this calculator to check your body mass index (BMI).
Height
cm.
Please enter value between 125 and 225.
Weight
kg.
Please enter value between 10.0 and 500.0 ( one decimal ).
Height
ft.
in.
Please enter value between 4.2 and 7.3
Weight
lb.
st.
Please enter value between 22.0 and 1000.0 ( one decimal ).
Calculate BMI 
Use this calculator to check your body mass index (BMI), which can be a helpful tool in determining your weight category. Or, use it to calculate your child’s BMI.
Calculate your Body Mass Index and Basal Metabolic Rate
years
cm.
kg.
What's the Basal Metabolic Rate (BMR)?
Basal Metabolic Rate (BMR) is the amount of energy needed to maintain basic bodily functions at rest in a neutral environment and an inactive digestive state. It’s similar to measuring how much fuel an idle car uses when parked. In this state, energy is used only to sustain essential organs like the heart, brain, kidneys, and lungs, among others. BMR accounts for approximately 70% of total daily energy expenditure, while physical activity makes up about 20%, and around 10% is dedicated to digesting food (thermogenesis)
BMR is measured under controlled conditions when a person is fully rested, with a quiet sympathetic nervous system. Typically, BMR constitutes the largest part of daily calorie needs, which can be estimated by multiplying BMR by an activity level factor (1.2–1.9).
BMR is measured under controlled conditions when a person is fully rested, with a quiet sympathetic nervous system. Typically, BMR constitutes the largest part of daily calorie needs, which can be estimated by multiplying BMR by an activity level factor (1.2–1.9).
What's Body Mass Index (BMI)?
Body Mass Index (BMI) is a simple measure for adults to categorize weight status—underweight, healthy, or overweight—based on height and weight. While BMI is not a diagnostic tool, it’s commonly used to assess weight-related health risks. BMI is calculated by dividing weight by the square of height (BMI = weight/height²).
BMI Categories:
- Underweight: <18.5
- Normal weight: 18.5–24.9
- Overweight: 25–29.9
- Obesity: 30 or greater