Calculate your Body Mass Index instantly in metric or imperial units, see your weight category, and find your healthy weight range.
Calculated on your device — nothing you enter is sent or stored anywhere.
Healthy weight range for your height: 56.7 – 76.3 kg (BMI 18.5–24.9)
Body Mass Index is a simple screening measure that relates your weight to your height: weight in kilograms divided by height in meters squared (kg/m²). Health organizations including the WHO and CDC use the same standard adult categories — below 18.5 is classed as underweight, 18.5–24.9 as a healthy weight, 25–29.9 as overweight, and 30 or above as obesity.
BMI is a population-level screening tool, not a diagnosis. It doesn't distinguish muscle from fat, so muscular athletes can score "overweight" while perfectly healthy, and it reads differently across ages and ethnicities. Use it as a starting point, and talk to a healthcare professional about what your number means for you.
This calculator works in metric and imperial units, shows where you fall on the BMI scale, and gives the weight range that corresponds to a healthy BMI for your height — all computed instantly on your device.
| BMI | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Healthy weight |
| 25.0 – 29.9 | Overweight |
| 30.0 and above | Obesity |
BMI = weight (kg) ÷ height² (m²). In imperial units the equivalent formula is weight (lbs) ÷ height² (in²) × 703. This calculator handles both unit systems and the conversion for you.
For adults, a BMI between 18.5 and 24.9 is classed as the healthy range by the WHO and CDC. The calculator shows the actual weight range that corresponds to this for your specific height.
No — it's a screening tool with known limits. It can't tell muscle from fat, so athletes may read as overweight; it also applies differently to children, pregnant women, the elderly, and varies across ethnic groups. Treat it as one signal among many, not a diagnosis.
Completely. The calculation runs in your browser — your height and weight are never transmitted, stored, or logged anywhere.
Not with these adult cut-offs. For ages 2–19, BMI is interpreted through age- and sex-specific percentile charts. Use a pediatric BMI percentile tool or ask your pediatrician.
This tool provides general information for educational purposes and is not medical advice. Consult a healthcare professional for guidance about your weight and health.
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