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BMI Calculator
Estimate body mass index using metric height and weight.
Body measurements
Enter weight and height using metric units.
BMI estimate
A screening ratio based on height and weight.
Your BMI23.1
CategoryHealthy range
Reference healthy range18.5–24.9
BMI is a general screening estimate and is not a medical diagnosis.
🔒 Your inputs stay in your browser. UtilityKit does not store calculation data.
How it works
How to use the BMI Calculator
- Enter the requested values in the fields above.
- Review the result, then adjust any input to update it instantly.
- Copy the result or open a related tool for the next step.
About this tool
What this tool does
Estimate body mass index from height and weight. It provides a general estimate and is not a medical diagnosis or a substitute for professional healthcare advice.
Common uses
When it is useful
- Understand a general health-related estimate
- Compare how input changes affect the result
- Prepare questions for a qualified professional
Formula
BMI formula
BMI = weight (kg) ÷ height² (m)
BMI is a screening estimate and does not diagnose health or body composition.
Worked example
Example BMI estimate
Input
70 kg and 1.75 m
Result
BMI is approximately 22.9.
FAQ
Frequently asked questions
Is the BMI Calculator free to use?
Yes. The BMI Calculator is available without registration or payment.
Does the BMI Calculator upload my data?
No. The calculation or transformation runs locally in your browser unless the page explicitly says otherwise.
How accurate is the BMI Calculator?
The result is a general screening estimate and should not be treated as a diagnosis or medical recommendation.
Can I use the BMI Calculator on a phone?
Yes. UtilityKit tools are designed to work on modern desktop and mobile browsers.
Can I use the result for professional decisions?
Use the result as a convenient estimate or processing aid. For financial, medical, legal, or other high-impact decisions, verify it with a qualified professional or authoritative source.