BMI calculator
Body mass index from your height and weight.
BMI is a screening measure, not a diagnosis. It does not account for muscle, age or body shape.
Your BMI
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How to use BMI calculator
Three steps. No account, no upload, no waiting in a queue.
- 1
Choose metric or imperial units.
- 2
Enter your height and weight.
- 3
See your BMI and its category.
Why use Tooldesk bmi calculator
Free, with no sign-up
Instant results as you type
Works offline once loaded
Nothing you type is sent anywhere
Frequently asked questions
What is a healthy BMI?
For adults, the WHO puts 18.5 to 24.9 in the healthy range.
Is BMI accurate for everyone?
No. It ignores muscle, age and body shape. Use it as a rough guide and ask a doctor for advice.