BMI Calculator
BMI Scale
đź’ˇ About BMI
BMI (Body Mass Index) is a measure of body fat based on height and weight. It’s a useful screening tool but doesn’t directly measure body fat. Muscle mass, bone density, and other factors can affect BMI results.
Note: This calculator is for adults 20 years and older. Consult a healthcare professional for personalized advice.
BMI Categories & Range Values
| Category | BMI Range |
|---|---|
| Severe Thinness | Below 16 |
| Moderate Thinness | 16 – 17 |
| Mild Thinness | 17 – 18.5 |
| Normal (Healthy) | 18.5 – 24.9 |
| Overweight | 25 – 29.9 |
| Obesity Class I | 30 – 34.9 |
| Obesity Class II | 35 – 39.9 |
| Obesity Class III (Severe) | 40 and above |
Related calculators:
BMI Calculator – Check Your Body Mass Index Instantly
Calculate your BMI instantly with our free BMI Calculator women and men. Enter your age, weight, height, and gender to know your Body Mass Index, weight category, and healthy range. Fast, accurate, and mobile-friendly BMI calculation tool.
Fast • Accurate • Easy to Use • Metric & Imperial Units
Take control of your health with our powerful and user-friendly BMI Calculator, designed to help you understand your body mass index in seconds. Whether you’re tracking your fitness progress, starting a weight-management journey, or simply curious about your health status, this tool gives you clear, instant, and reliable results—no formulas or guesswork needed.
Our calculator measures your Body Mass Index (BMI) using your height and weight to determine whether you fall into one of the following categories:
- Underweight
- Normal weight
- Overweight
- Obese
Each category is color-coded and visually highlighted to help you quickly understand your result and how it compares to a healthy range.
This calculator helps you:
- Track fitness progress
- Manage weight goals
- Understand your health category
- Use globally recognized BMI standards
- Get quick, accurate results with no complex formulas
BMI Calculator Women and men – (FAQ)
What is BMI (Body Mass Index)?
BMI (Body Mass Index) is a simple calculation using your height and weight to estimate whether your body weight is healthy for your height. It helps classify weight as underweight, normal, overweight, or obese.
How is BMI calculated?
BMI is calculated using this formula:
BMI = Weight (kg) / Height (m²)
For example, if someone weighs 70 kg and is 1.70 meters tall, their BMI is 24.2.
What is the ideal BMI range?
According to WHO: 18.5 – 24.9: Normal (Healthy Weight)
Is BMI accurate for everyone?
- BMI is useful for most adults, but not accurate for:
- Bodybuilders
- Pregnant women
- Athletes
- Elderly individuals with low muscle mass
- It doesn’t measure fat directly; it just gives a weight-for-height estimate.
Why is BMI important?
BMI helps identify health risks like:
- Heart disease
- Diabetes
- High blood pressure
- Stroke
- Obesity-related conditions
- It’s a quick screening tool, not a diagnostic test.
What is a healthy weight for my height?
A healthy weight depends on height. Your BMI calculator automatically shows the healthy weight range for your height.
Can BMI predict diseases?
Not directly. BMI indicates risk factors—higher or lower BMI increases chances of certain health conditions but doesn’t confirm disease.
Is BMI different for men and women?
No. BMI Calculator women and men formula is the same for both.
However, body fat distribution differs between men and women, which BMI doesn’t measure.
At what BMI should I worry?
You should consult a doctor if your BMI is:
- Below 16 (Severe Underweight)
- Above 30 (Obesity)
- These ranges are associated with higher health risks.
How can I lower my BMI naturally?
- Eat balanced meals
- Reduce junk food and sugar
- Exercise 30–45 minutes daily
- Increase protein & fiber intake
- Improve sleep
- Stay hydrated
How reliable is BMI for children?
For children, BMI must be interpreted using age- and gender-specific percentiles, not adult ranges.
How often should I check my BMI?
Checking every 2–3 months is ideal unless you’re on a weight-loss or fitness program.
Does BMI include muscle mass?
No. BMI cannot differentiate:
- Muscle vs. fat
- Bone density
- Body shape
- So athletes may appear overweight despite low body fat.
Is BMI used worldwide?
Yes. WHO and most health organizations globally use BMI as the primary weight assessment tool.
Can my BMI change quickly?
Not drastically. Healthy BMI changes happen gradually due to:
- Diet changes
- Physical activity
- Fat loss or muscle gain