BMI calculator — body mass index with the Asian-Indian scale
BMI with the Asian-Indian cut-offs, not just the WHO ones.
Your BMI
24.2
WHO scale
Normal weight
Asian-Indian example
At risk / overweight
How to use bmi calculator
- 1Enter your numbers in the fields above. The result updates as you type — there is no calculate button to press and nothing is submitted anywhere.
- 2Check the assumptions shown under the result. A calculator is only as good as the rate, term and rounding it assumes, and those are stated rather than buried.
- 3Read the working, not just the headline figure. Where a calculation has components — interest, principal, tax, slab — they are shown separately so the answer can be checked by hand.
- 4Note the figure down before you close the tab: nothing is stored, so a result you forget to note is gone.
Why this tool, and why browser-side
Some studies find elevated metabolic risk at lower BMI values in Asian populations. The WHO retains its international classification while identifying additional public-health action points; other studies use different cut-offs.
A BMI of 24 can fall into different screening categories under different references. Neither result is a diagnosis or proof of an individual’s health.
The calculator also converts a reference BMI band to approximate weights for the entered height. It is not a personalised weight goal; consult a clinician for individual advice.
Calculators are the tools people return to — a loan decision this month, a tax check at year end, a BMI reading at a clinic visit. Reaching for a page that uploads nothing and logs nothing makes the return visit a comfortable one.
Every calculation runs in your browser as you type. There is no request in flight, so there is no privacy-policy asterisk to read: the salary, the loan amount, the medical figures and the dates you enter are never transmitted.
Results are shown with the working rather than as a bare number. That matters when a loan officer, a school form or a tax portal wants the figure to be justifiable, and it matters more when the figure is one you are going to argue with.
The bmi calculator on this page is deliberately narrow: it answers one question, states the assumptions beside the answer, and does not ask for an email or an account first. That is the whole design — a calculator you can open, use and close without leaving anything of yourself behind.
Payments around these numbers have their own conventions. Indian EMIs are almost always charged on the reducing balance, which is why interest dominates the early years; fixed deposits compound at whatever frequency the bank’s terms say, typically quarterly, and the effective annual yield is what should be compared across instruments. Nothing here is financial advice — it is arithmetic on the figures you supply, with the convention stated so you can check it.
The figure that matters is often not the one you asked for. On a loan, the monthly instalment is fixed by your cash flow while the total interest is what changes with the tenure; on a tax computation, the useful output is the difference between two regimes rather than one regime’s liability; on a retirement projection, the assumption that does the most damage is a return figure that is one percentage point too optimistic over thirty years.
Accepted inputs are PDF files up to 50 MB. SVG, HTML and other script-bearing formats are refused outright rather than sanitised, because a file that can execute code has no business being re-encoded — and an upload field that accepts one is a security hole rather than a feature. The tool works on one file at a time, which keeps the result unambiguous.
How it works under the hood
BMI is weight in kilograms divided by height in metres squared. The reference band solves that relation for the chosen threshold values at your height; it does not account for muscle, pregnancy or medical history. The arithmetic follows the published formulas rather than approximations: loan instalments use the standard reducing-balance annuity formula; recurring and fixed deposits compound at the frequency the instrument specifies; tax and slab figures are applied in the order the statute defines, including surcharge and cess where relevant; age is computed on the calendar by borrowing months the way an eligibility clause does, not by dividing total days. All of it is evaluated in your browser with double-precision floating point, and each result is rounded only for display, which is why the figure you see and the figure you recompute agree to the rupee. The calculation runs locally in your browser. The page or its code may still require a connection to load, and offline use is not guaranteed. Review the assumptions and independently verify important decisions.
Frequently asked questions
Why might waist measurement be useful alongside BMI?
BMI cannot distinguish muscle from fat or show where fat is stored. Waist circumference can provide additional screening information, but a clinician should interpret measurements and individual risk.
Does BMI work for athletes and muscular people?
No. Muscle is denser than fat, so a fit, muscular person can register as overweight. BMI is a population screening tool, not an individual diagnosis, and it should always be read alongside waist circumference and body-fat estimates.
Is BMI used for children?
Not with these adult thresholds. Children and adolescents need age- and sex-specific growth references and interpretation by a qualified professional.
Why are the Indian BMI cut-offs lower than the international ones?
Some studies find elevated metabolic risk at lower BMI values in Asian populations. Thresholds vary; WHO retains its international classification and identifies additional public-health action points. BMI alone is not a diagnosis.
Does BMI work for athletes, children and pregnant women?
No. It cannot distinguish muscle from fat, children need age- and sex-specific percentile charts, and BMI categories do not apply during pregnancy. The waist measurement on this page is often more informative than the index alone.
Are these results financial or medical advice?
No. They are arithmetic on the numbers you supply, with the assumptions stated. A projection is not a forecast, a tax figure follows rules recorded at a stated date, and BMI is a screening indicator rather than a diagnosis.
Do you store the numbers I type?
No. The calculation runs in the page with no request in flight, so there is nothing to store on our side. Refreshing the page clears everything — which is also why we cannot recover a calculation you forgot to note down.
How current are the rates and slabs?
Each rate or slab carries the date it was recorded and the source it came from. Tax and interest rates change, so the page tells you to verify against the official source before acting on a figure — that instruction is not legal boilerplate.