BMI CALCULATOR

Body Mass Index · BMR · TDEE · Healthy Ranges

Your Measurements

Age

Sex

Height (cm)

Weight (kg)

BMI Classification Scale

Category	BMI Range
Underweight	< 18.5
Normal weight	18.5 – 24.9
Overweight	25.0 – 29.9
Obese (Class I)	30.0 – 34.9
Obese (Class II)	35.0 – 39.9
Obese (Class III)	≥ 40.0

Your BMI

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1618.5253040+

Healthy Min

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BMI 18.5

Healthy Max

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BMI 24.9

BMR

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kcal/day at rest

Ideal Weight

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Devine formula

Activity Level — Daily Calories (TDEE)

Total Daily Energy Expenditure

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FREQUENTLY ASKED QUESTIONS

What is a healthy BMI for women?

A healthy BMI for women is between 18.5 and 24.9. Women naturally carry more body fat than men at the same BMI, so some researchers suggest 21–23 is optimal for women specifically.

How do I calculate BMI in kg and cm?

BMI = weight (kg) ÷ height (m)². For example: 70 kg ÷ (1.75 × 1.75) = 22.9. This calculator does it automatically — just enter your height in cm and weight in kg above.

What is the difference between BMR and TDEE?

BMR (Basal Metabolic Rate) is how many calories your body burns at complete rest. TDEE (Total Daily Energy Expenditure) factors in your activity level. Eating at your TDEE maintains weight; eating below it causes weight loss.

Is BMI accurate for athletes?

Not always. Muscle is denser than fat, so athletes can show a high BMI while having very low body fat. BMI is best used as a general population screening tool, not a precise individual health measurement.

What is a good BMI for my age?

The healthy BMI range of 18.5–24.9 applies to all adults over 20. For children and teens, BMI is age- and sex-specific. Adults over 65 may benefit from a slightly higher BMI of 22–27 to reduce fracture risk.