BMI check
Input: 70 kg and 1.75 m
Result: BMI about 22.9
Health Calculator
Calculate your Body Mass Index (BMI) and Basal Metabolic Rate (BMR) to assess your health status. Get personalized weight category and daily calorie estimates.
Body Information
Formula and decision logic
Health estimates like BMI and BMR are screening metrics, not medical diagnoses, so they are best used as reference values.
BMI = weight (kg) / height (m)^2
BMR depends on sex, age, height, and weight
Worked examples
Daily energy baseline
Input: Use BMR with activity level
Result: Estimated maintenance calories
How to use this calculator
- 1Enter your height and weight
- 2Select your gender and age for BMR
- 3View your BMI category and daily calorie estimate
How to read the result
- BMI is good for a quick screening view, while BMR and daily calories are more useful for planning intake or activity.
- Changes in weight, age, or activity assumptions can shift the result more than people expect.
Common input mistakes
- Treating a calculator result as a diagnosis instead of a planning reference.
- Ignoring that muscle mass, body composition, and medical context can change interpretation.
Frequently asked questions
What is BMI?
BMI (Body Mass Index) is a measure of body fat based on height and weight. It helps categorize weight as underweight, normal, overweight, or obese.
What is BMR?
BMR (Basal Metabolic Rate) is the number of calories your body needs at rest to maintain basic physiological functions like breathing and circulation.
How accurate is the BMI calculation?
BMI is a useful screening tool but does not directly measure body fat. Factors like muscle mass, age, and gender can affect its accuracy.