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Free Online Tool
BMI Calculator
Check your Body Mass Index and know your health better.
Instant resultsNo signup100% free
Works on both metric & imperial units
What is BMI?
Body Mass Index is a quick screening number that relates your weight to your height. It places your result on a visual scale so you can see at a glance which health category you fall into.
- Supports metric & imperial units
- Color-coded health categories
- Instant, privacy-friendly result
How to Use
- 1Select your preferred unit system: metric (kg/cm) or imperial (lb/ft).
- 2Enter your weight and height in the respective fields.
- 3Press Calculate — your BMI appears with its health category.
- 4Review the chart below to understand what the number means.
Stay healthy, stay happy!
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Frequently Asked Questions
What is a healthy BMI range?
A BMI between 18.5 and 24.9 is generally considered normal weight for adults.
Is BMI accurate for athletes?
BMI does not distinguish between muscle and fat, so muscular individuals may have a high BMI despite being healthy.
Can children use this calculator?
BMI for children and teens is interpreted differently using age- and sex-specific percentile charts, which this tool does not provide.
Does this constitute medical advice?
No. BMI is a screening tool only. Consult a healthcare professional for a full health assessment.