BMI Calculator
Find your Body Mass Index in seconds. Enter your weight in kg or pounds and your height in feet and inches or centimetres. You will see your BMI, your category on the WHO and Asian scales and the healthy weight range for your height.
Result
Enter the details and press the button to see your result.
How to use this calculator
- Choose your units: kg with feet and inches is the most common in Pakistan.
- Enter your weight and height. Age is optional and only used to warn under-18s.
- Press Calculate BMI to see your BMI, category and healthy weight range.
- Use Share on WhatsApp to send the result to your doctor or family.
How it is calculated
1 foot = 0.3048 m, 1 inch = 0.0254 m, 1 pound = 0.4536 kg
Healthy weight range = 18.5 to 24.9 x height in metres squared
Worked example
- Weight 72 kg, height 5 feet 7 inches = 67 inches = 1.70 m.
- Height squared = 1.70 x 1.70 = 2.89.
- BMI = 72 / 2.89 = 24.9, normal on the WHO scale.
- On the Asian scale (overweight from 23) the same BMI counts as overweight.
BMI for Pakistanis and South Asians
The World Health Organization uses 18.5 to 24.9 as the normal BMI range for adults. Research on South Asian people shows that diabetes, high blood pressure and heart disease often begin at a lower BMI, so the WHO expert panel suggested lower action points for Asian populations: overweight from 23 and obese from 27.5.
That is why this calculator shows both categories. If your BMI is between 23 and 25, you are normal on the international scale but may already have a higher risk. A waist size above about 90 cm for men or 80 cm for women is another warning sign.
BMI does not measure body fat directly. Athletes with heavy muscle can show a high BMI, and older people can show a normal BMI with low muscle. Use BMI as a starting point and talk to a doctor about your own health.
Frequently asked questions
What is a normal BMI?
For adults, 18.5 to 24.9 is normal on the WHO scale. For South Asians, many doctors prefer a BMI below 23.
How do I calculate BMI with feet and inches?
Choose kg and feet / inches, enter both values and press Calculate. The calculator converts your height to metres for you.
What BMI is obese?
A BMI of 30 or more is obese on the WHO scale. On the Asian scale, obesity starts at 27.5.
Is BMI accurate for everyone?
No. It does not tell muscle from fat, and it is not used on its own for children, pregnant women or bodybuilders.
Can I use this for children?
Children need BMI-for-age percentile charts. The calculator shows a warning if you enter an age under 18.
Is my data saved?
No. Everything is calculated in your browser and nothing is sent or stored.
About the BMI Calculator
Body Mass Index (BMI) is a simple number that compares your weight with your height. Doctors, gyms, insurance forms and job medicals use it as a quick first check of whether a person is underweight, at a healthy weight, overweight or obese.
In Pakistan most people know their height in feet and inches and their weight in kilograms, so this calculator accepts that mix directly. You can also use centimetres or pounds if your report or scale shows those units.
Because South Asians tend to carry more body fat at the same BMI, the calculator shows both the international WHO category and the lower Asian cut-offs. Use the result to start a conversation with your doctor, not as a diagnosis.
Key Terms Explained
BMI
Weight in kg divided by height in metres squared.
Underweight
A BMI below 18.5.
Normal weight
A BMI from 18.5 to 24.9 (WHO) or 18.5 to 22.9 (Asian cut-off).
Overweight
A BMI from 25 (WHO) or from 23 (Asian cut-off).
Obese
A BMI of 30 or more (WHO) or 27.5 or more (Asian cut-off).
Waist size
A second check of health risk; belly fat matters more than total weight.
Step-by-Step Guide
Weigh yourself
Use the same scale in the morning, before breakfast, in light clothes.
Measure your height
Stand straight against a wall without shoes and mark the top of your head.
Pick your units
Kg and feet / inches is the most common choice.
Enter the numbers
Type weight and height; inches can be left as 0.
Read both categories
Compare the WHO and Asian results and note your healthy weight range.
Common Mistakes to Avoid
Using height with shoes
Shoes add 2 to 4 cm and lower your BMI.
Weighing at different times
Weight changes through the day; weigh at the same time.
Judging muscle as fat
Strong athletes can have a high BMI without extra fat.
Using adult BMI for children
Children need age-based charts.
Ignoring the Asian cut-off
Risk can start from BMI 23 for South Asians.
Chasing a single number
Look at the trend over weeks, not one reading.
Practical Tips
Check monthly
Track BMI once a month, not daily.
Measure your waist
Keep it under about 90 cm (men) or 80 cm (women).
Small steps work
Losing 5% of body weight already helps blood sugar and blood pressure.
Walk every day
A 30-minute brisk walk is a simple start.
Watch sugary drinks
Cold drinks and sweet tea add many hidden calories.
Talk to a doctor
Especially if you have diabetes, blood pressure or heart issues in the family.
Who Uses the BMI Calculator
Individuals
Check your own weight status and goal weight.
Gyms and trainers
Record a client's starting point and progress.
Clinics
Quick screening during check-ups and OPD visits.
Students
Learn how BMI is calculated for biology and health classes.
More Questions
How often should I check my BMI?
Once a month is enough to see a trend.
Does BMI differ for men and women?
The adult formula and categories are the same for both.
What is my ideal weight?
Any weight that keeps your BMI between 18.5 and 24.9, or below 23 on the Asian scale, is in the healthy range.
Why is my BMI high when I am fit?
Muscle is heavy. Ask for a body fat or waist check.
Can pregnant women use BMI?
Not during pregnancy. Use your pre-pregnancy weight and your doctor's advice.
Is BMI used in medical tests for jobs?
Some employers and visa medicals record it, usually along with other checks.
Why Use SoftBar Free Tools
Made in Faisalabad for people and businesses across Pakistan.
Free and fast
No sign-up, works instantly on any phone.
Private
Calculators run in your browser; your numbers are not stored.
Mobile friendly
Big buttons and simple forms for phones.
Built by a software team
The same team that builds POS and business software.
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