BMI Calculator — Body Mass Index Check
Calculate your Body Mass Index and check whether you fall in the underweight, normal, overweight, or obese range.
Last updated: 2026-06-01
BMI Calculator
BMI Results
Your BMI
24.2
Normal weight
What does it mean?
- Underweight: BMI less than 18.5
- Normal weight: BMI 18.5 to 24.9
- Overweight: BMI 25 to 29.9
- Obesity: BMI 30 or greater
Understanding BMI (Body Mass Index)
What is BMI?
BMI (Body Mass Index) is a simple calculation that uses your height and weight to estimate body fat. It's a screening tool that can indicate whether you're underweight, normal weight, overweight, or obese.
Why BMI Matters
- • Quick health screening tool
- • Helps identify weight-related health risks
- • Used by healthcare professionals worldwide
- • Free and easy to calculate
BMI Formula
The BMI is calculated using the formula:
For imperial units: BMI = (Weight (lb) / Height (in)²) × 703
Why Trust Our Calculator?
Industry-Standard Formulas
Mathematically accurate calculations
10,000+ Daily Users
Trusted by investors worldwide
Real-time Calculations
Instant, accurate results
Regular Verification
Accuracy checked monthly
Privacy First
No personal data collection
Always Updated
Latest market standards
Take Control of Your Health
Explore our comprehensive health calculators and guides to monitor your fitness journey and make informed health decisions.
Data sources
Rates and thresholds on this page are based on official publications. Verify against the source for your specific circumstances.
- WHO — Healthy lifestyle recommendations — verified 2026-06-01 · Standard adult BMI category thresholds
How BMI Works
Body Mass Index (BMI) is weight in kilograms divided by height in metres squared (kg/m²). It is a quick screening tool used worldwide — not a diagnostic measure on its own.
For example, someone who is 170 cm tall and weighs 70 kg has a BMI of 24.2, which falls in the normal range (18.5–24.9). Athletes with high muscle mass may show a higher BMI despite low body fat.
BMI is a screening tool and does not account for muscle mass, bone density, or individual health conditions. Consult a healthcare professional for personalised advice.