BMI Calculator

Quickly assess your body weight relative to your height. Get instant, accurate BMI results with personalized health classifications.

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170 cm
70 kg
Years
24.2
Your BMI
Normal Weight

Health Insight

You are in a healthy weight range for your height. Maintain a balanced diet and regular physical activity to stay at this level.

Healthy Range
18.5 - 24.9
Ideal Weight
53.5 - 72.0 kg

How to calculate your BMI

1

Select Unit

Choose between Metric (kg/cm) or Imperial (lb/in) systems.

2

Enter Details

Input your gender, height, weight, and age for higher accuracy.

3

Review Gauge

See where you fall on the WHO-standardized color-coded gauge.

4

Get Advice

Read personalized feedback on your current category and ideal range.

Understanding BMI Categories

The Body Mass Index (BMI) is a screening tool used to identify potential weight problems. While it doesn't measure body fat directly, it correlates well with direct measures of body fat.

Underweight
< 18.5
Normal
18.5 – 24.9
Overweight
25.0 – 29.9
Obese
30.0 +

Features for a healthier you

Real-time Calculation

No need to click "Calculate". Our engine updates your BMI and insights instantly as you adjust the sliders or type values.

WHO Standards

We use the official World Health Organization categories for classification, ensuring your results follow global health guidelines.

Ideal Weight Guidance

Beyond just a score, we calculate your ideal weight range based on your specific height, helping you set realistic health goals.

Unit Versatility

Effortlessly switch between Metric and Imperial systems. We handle all the conversions in the background for a seamless experience.

Frequently Asked Questions

What is BMI?
Body Mass Index (BMI) is a person's weight in kilograms divided by the square of height in meters. It is an inexpensive and easy screening method for weight category—underweight, healthy weight, overweight, and obesity.
Is BMI accurate for everyone?
BMI is a general indicator and may not be accurate for athletes or individuals with high muscle mass, as muscle weighs more than fat. It also may not accurately reflect body fat in older adults or pregnant women.
How often should I check my BMI?
Checking your BMI once a month or as part of your regular health check-ups is generally sufficient for most adults to track their weight trends over time.