BMI Calculator
Calculate your Body Mass Index instantly. Free BMI calculator with metric and imperial units.
22.5
Category: Normal
About the BMI Calculator
BMI Calculator helps you find your Body Mass Index — a screening number used worldwide to identify weight categories that may lead to health problems. Enter your weight and height to instantly see your BMI and category.
How to use the BMI Calculator
- Open the tool: Open the BMI Calculator on this page — it loads instantly in any modern browser.
- Enter your input: Type or paste your input into the form above.
- Get the result: The output is generated in real-time. Copy or download it with one click.
Why use the BMI Calculator?
- 100% free with no signup or limits
- Works on desktop, tablet and mobile
- Privacy-first — runs entirely in your browser
- No ads inside the tool, no tracking inside the workflow
- Instant results, optimized for speed
Who is this tool for?
- Students working on homework or assignments
- Developers building or testing applications
- Writers, marketers and content creators
- Office workers and remote professionals
Frequently Asked Questions
What is a healthy BMI?
A BMI between 18.5 and 24.9 is considered healthy for most adults.
How is BMI calculated?
BMI = weight (kg) / height² (m²). For pounds and inches, multiply by 703.
Is BMI accurate for athletes?
BMI does not differentiate muscle from fat, so very muscular people may show a higher BMI without being unhealthy.
Does the BMI calculator work for kids?
BMI for children uses different percentile charts. This calculator is intended for adults aged 20+.