BMI Calculator

Weight (kg)

Height (cm)

Your Body Mass Index

0.0

N/A

Healthy Weight Range: 0 - 0

Quick Tips

BMI is a useful general guideline but doesn't account for muscle mass or bone density.
A normal BMI range is considered to be between 18.5 and 24.9.
Athletes with high muscle mass may have a high BMI without being overweight.
For a more accurate health assessment, consider measuring your waist circumference and body fat percentage.
Consult a healthcare professional for personalized medical advice regarding your weight.

About BMI Calculator

The BMI Calculator helps you calculate your Body Mass Index — a widely used health screening indicator that estimates whether your weight falls within a healthy range for your height. Enter your weight and height in either metric (kg/cm) or imperial (lbs/ft/in) units, and the calculator instantly shows your BMI value, BMI category (Underweight, Normal, Overweight, or Obese), and your healthy weight range for your height. BMI is a useful general health guideline, though it should not replace professional medical advice, as it does not account for muscle mass, bone density, or body composition.

How to Use

Select your preferred unit system: Metric (kg/cm) or Imperial (lbs/ft/in).
Enter your weight (in kg or lbs).
Enter your height (in cm, or in feet and inches).
Click "Calculate BMI" to see your result.
Review your BMI value, category, and healthy weight range.
Click Clear to reset.

Frequently Asked Questions

What is a healthy BMI range?

According to standard BMI classifications: Below 18.5 = Underweight, 18.5 to 24.9 = Normal/Healthy, 25.0 to 29.9 = Overweight, 30.0 and above = Obese.

Is BMI accurate for athletes or muscular people?

BMI can be misleading for athletes and people with high muscle mass, since muscle weighs more than fat. A muscular person may have a high BMI but still be very healthy. For a more complete picture, consider body fat percentage or waist-to-height ratio.

How is BMI calculated?

BMI = Weight (kg) ÷ Height² (m²). For example: if you weigh 70 kg and are 1.75 m tall, BMI = 70 ÷ (1.75 × 1.75) = 22.9 (Normal range).

Does BMI apply to children?

This calculator is designed for adults (18+). Children use age- and sex-specific BMI-for-age charts (called BMI percentiles), not the same standard adult ranges.

Is the BMI Calculator free?

Yes, completely free with no account required.

Percentage Calculator

Calculate any percentage quickly and accurately.

Vat Calculator

Free online Vat Calculator. Fast, secure, and easy to use.

Income Tax Calculator

Estimate your income tax based on your earnings and bracket.

Tip Calculator

Calculate tips and split bills quickly for any group size.

Date Calculator

Calculate the difference between two dates instantly.