BMI & BMR Calculator
Calculate your Body Mass Index (BMI) and Basal Metabolic Rate (BMR) with health insights
Based on Mifflin-St Jeor equation · ±500 kcal/day ≈ ~0.5 kg/week
BMI Calculator — Body Mass Index
Calculate your Body Mass Index (BMI) from your height and weight. BMI is a widely-used screening tool to identify potential weight-related health risks in adults.
BMI categories
Underweight
BMI below 18.5 — may indicate nutritional deficiency or other health issues.
Normal weight
BMI 18.5–24.9 — associated with the lowest health risks in population studies.
Overweight
BMI 25–29.9 — increased risk of cardiovascular disease and type 2 diabetes.
Obese
BMI 30 and above — significantly increased risk of weight-related health conditions.
FAQ
Is BMI accurate?
BMI is a useful population-level screening tool but doesn't account for muscle mass, bone density, or fat distribution. Athletes often have a high BMI despite being healthy.
What is a healthy BMI?
The World Health Organization defines 18.5–24.9 as 'normal' for adults. These ranges may differ for children, the elderly, and different ethnic groups.
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