BMI Calculator
Check your Body Mass Index and see which weight category you fall into.
How to Use This Calculator
- Enter your details in the fields above — all fields are used only in your browser, nothing is stored or sent anywhere.
- Double-check your units (cm/kg) before submitting for the most accurate result.
- Click Calculate to see your personalized result instantly.
- Results are estimates based on established formulas — for medical decisions, always confirm with a healthcare professional.
Frequently Asked Questions
What is a healthy BMI range?
A BMI between 18.5 and 24.9 is generally considered a healthy range for most adults, according to WHO guidelines.
Does BMI account for muscle mass?
No — BMI doesn't distinguish between muscle and fat, so very muscular people (athletes, bodybuilders) may show a higher BMI without excess body fat.
Is BMI accurate for everyone?
BMI is a useful general screening tool but is less accurate for athletes, older adults who've lost muscle mass, pregnant women, and children — it should be one input among several, not a standalone diagnosis.
What should I do if my BMI is outside the healthy range?
A BMI outside 18.5–24.9 isn't a diagnosis on its own. Talk to a doctor or dietitian who can look at your full health picture — body composition, diet, activity level, and family history — before making any changes.
How often should I check my BMI?
For most people, checking every few months is plenty — BMI changes slowly, and checking too often can create unnecessary anxiety around normal weight fluctuations.
Is BMI different for men and women?
The BMI formula itself is the same for both, though healthy body fat percentages differ by sex — this is one reason BMI works better as a general screening tool than a precise individual measure.