Fitness & Health Calculator Free & Instant
BMI Calculator
Free online BMI calculator. Calculate body metrics, target health zones, nutrition, and fitness goals.
BMI Calculator Inputs
70 kg
175 cm
28 yrs
Body Mass Index (BMI)
22.9
Normal weight
UnderweightNormalOverweightObese
BMR (Basal Rate)
1659 kcal/day
TDEE (Daily Need)
2281 kcal/day
BMI Calculator — Body Mass Index & Health Analysis
Body Mass Index (BMI) is a widely-used screening tool to categorize weight relative to height. This free BMI calculator instantly classifies you as underweight, normal, overweight, or obese, and also calculates your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) to support your health goals.
Step-by-Step Guide
- 1Select your unit system: Metric (kg/cm) or Imperial (lbs/inches).
- 2Choose your biological sex.
- 3Enter your weight, height, and age.
- 4View your BMI score, category, BMR, and daily calorie needs.
Formula
BMI = Weight (kg) / Height (m)² | Underweight: <18.5 | Normal: 18.5–24.9 | Overweight: 25–29.9 | Obese: ≥30Why Use Our BMI Calculator?
- Instant browser-side calculation
- 100% private — no data stored
- Visual charts & breakdowns
- Free forever — no sign-up needed
Frequently Asked Questions
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