BMI Calculator
Calculate Body Mass Index in metric or imperial units.
A healthy weight for your height is about 53.5 to 72.0 kg.
BMI is a screening measure, not a diagnosis. For many South Asian adults, health risks start at a lower BMI, around 23. Talk to a doctor about your ideal weight.
How to Use the BMI Calculator?
Calculate your Body Mass Index in metric or imperial units and see your healthy weight range.
- 1
Choose Metric (cm and kg) or Imperial (feet, inches and pounds).
- 2
Enter your height and weight.
- 3
Read your BMI and its category instantly.
- 4
Check where you fall on the colour scale and your healthy weight range.
Benefits of Using Our BMI Calculator
Instant result
Your BMI and category update as you type.
Healthy weight range
See the weight range that matches a healthy BMI for your height.
Both unit systems
Use centimetres and kilograms or feet and pounds.
Private
Calculated on your device. Nothing is stored.
Who Can Use This BMI Calculator?
Fitness beginners
Get a simple starting point for your goals.
Parents and adults
Keep an eye on weight trends over time.
Gym trainers
Quickly calculate BMI for clients.
Students
Learn how BMI is calculated for health classes.
Frequently Asked Questions
Everything you need to know about the BMI Calculator.
How is BMI calculated?
BMI equals your weight in kilograms divided by your height in metres squared. For example, 68 kg at 1.70 m gives 68 divided by 2.89, which is a BMI of about 23.5.
What is a healthy BMI?
For most adults, a BMI from 18.5 to 24.9 is considered a healthy weight, 25 to 29.9 overweight, and 30 or more obese. Many health bodies suggest that South Asian adults face higher health risks at lower BMIs, from about 23.
Is BMI accurate for everyone?
BMI is a quick screening tool, not a diagnosis. It does not tell muscle from fat, so athletes may score high, and it is not designed for children, pregnant women or older adults. Waist size and a doctor's advice give a fuller picture.
Can children use this BMI calculator?
Children and teenagers need BMI for age percentile charts, which compare them with others of the same age and sex. Please use a paediatric BMI chart or consult a doctor for anyone under 18.
Related Tools
All Utility ToolsInvoice Generator
Create professional invoices with your logo, taxes, payment links and QR codes, then export PDF, Word or PNG.
GST Calculator
Add or remove GST and see CGST, SGST and IGST split.
URL Shortener
Turn long links into short ones that are easy to share.
Percentage Calculator
Solve every common percentage question in one place.