BMI CALCULATOR

Body Mass Index · BMR · TDEE · Healthy Ranges
Your Measurements
BMI Classification Scale
CategoryBMI Range
Underweight< 18.5
Normal weight18.5 – 24.9
Overweight25.0 – 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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Enter your details
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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Enter your details above

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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.

Explore more free tools at 67 Fresh — the 67 Fresh Calculator, the 67 Fresh Unit Converter, the 67 Fresh Password Generator, and the 67 Fresh Word Counter.