Free health calculators for BMI, diabetes risk & HbA1c
Free health calculators for BMI, diabetes risk, blood sugar, HbA1c, obesity and metabolic health. Built for India using evidence-based clinical guidance to help you understand your results and decide what to do next.
For education and screening only — these calculators don't replace a diagnosis or professional medical advice.
Uses Asian-Indian BMI thresholds (ICMR). Screening only — not a diagnosis.
What are health calculators and how do they help?
A number on its own rarely helps. Our tools are built to close the gap between a raw figure and a clear, safe decision — with thresholds chosen for India.
Health calculators are tools that take everyday measurements — height, weight, blood sugar, or test results — and translate them into a meaningful health figure, such as your BMI or estimated diabetes risk. They are built for screening and awareness, not for diagnosis.
Why trust these calculators?
- Built on established clinical guidelines (ICMR, ADA, IFCC/NGSP)
- Reviewed by qualified healthcare professionals
- Updated as clinical recommendations evolve
- Designed specifically for Indian users
- Transparent about what they can and can't tell you
A fasting sugar of 116 mg/dL or a BMI of 24 means little until someone explains where it sits, why it matters, and what to do next. That space — between a measurement and a decision — is exactly what a good health calculator should fill.
Built for India, not borrowed from the West
Where Indian bodies and Indian guidance differ from Western defaults, we use the Indian thresholds. Our BMI calculator applies the lower Asian-Indian cut-offs recommended by the ICMR, so a "healthy" reading reflects real risk in an Indian population — not a range imported from elsewhere.
Every result ends with what to do
No tool here stops at a number. Each result explains what it means, why it matters, and when to speak to a doctor — so you leave with a next step rather than a new worry.
Who should use these calculators?
These tools may help if you:
- Want to understand a blood sugar or HbA1c result
- Are checking your risk of type 2 diabetes
- Want to assess weight-related health risk
- Need help making sense of a lab report
- Want clear information before speaking with a doctor
Jump straight to the most-used tools — the BMI calculator, the diabetes risk calculator, or the HbA1c converter — or read the conditions behind the numbers in our diabetes hub and diseases library. How these tools are built and limited is set out in our medical disclaimer.
Find a health calculator by topic
Browse our calculators by the health area you're interested in. We're building this library carefully — each tool is reviewed before it goes live, so you'll only ever see calculators that are ready to trust.
Diabetes & blood sugar
Check your risk of type 2 diabetes and convert HbA1c between units, using ADA and IFCC/NGSP standards adapted for Indian risk factors.
Read the diabetes hubWeight & body metrics
Understand where your weight sits using BMI thresholds set for Asian-Indian bodies by the ICMR — not the higher Western cut-offs that can miss real risk.
- BMI Calculator
- Ideal Weight CalculatorComing soon
Blood sugar tracking
A simple way to log and interpret fasting and post-meal sugar readings against the ranges used in India. In clinical review now.
- Blood Sugar CalculatorComing soon
- Calorie & BMR Calculator
- Blood Pressure Checker
- Heart Risk Calculator
- Body Fat Calculator
- Daily Water Intake
- Pregnancy Due Date
- Ovulation Calculator
- Calorie & Macro Split
Each calculator above is mapped to India-relevant guidance and will appear in its topic category once it's been clinically reviewed. We'd rather publish a few tools you can rely on than many you can't.
Every calculator, ready to use
These are the calculators currently live on Cure.Care — each one clinically reviewed, built on India-relevant guidance, and free to use. No sign-up, and your numbers never leave your browser.
BMI Calculator
Find out whether your weight sits in a healthy range using BMI thresholds set for Asian-Indian bodies — where risk begins at a lower number than Western charts assume.
Open BMI CalculatorDiabetes Risk Calculator
Estimate your chance of developing type 2 diabetes from factors like age, waist size and family history — weighted for Indian risk patterns.
Open Diabetes Risk CalculatorHbA1c Converter
Convert HbA1c between % (NGSP) and mmol/mol (IFCC), and see the estimated average glucose — useful for making sense of a lab report.
Open HbA1c ConverterEvery calculator is a screening aid, not a diagnosis. For what your result means and what to do next, see the diabetes hub or read our medical disclaimer.
Health calculator questions
Clear, evidence-based answers to the most common questions about using our health calculators safely.
Are health calculators accurate?
Health calculators are accurate for what they're designed to do — give a quick, evidence-based estimate from the numbers you enter. Their output is only as good as the inputs, and they use general formulas, so they can't account for your full medical history. Treat the result as a useful screening estimate, not a precise clinical measurement.
Can a health calculator diagnose a disease?
No. Health calculators are screening and awareness tools, not diagnostic tests. A result such as a high BMI or raised diabetes risk can tell you something is worth checking, but only a qualified doctor — usually with a physical examination and blood tests — can diagnose a condition. Use a calculator as a starting point for a conversation with your doctor.
Why do Indian BMI ranges differ from Western ones?
People of Asian-Indian descent tend to carry more body fat and face higher metabolic risk at a lower BMI than Western populations. Because of this, the ICMR recommends lower BMI cut-offs for Indians — the overweight threshold begins at 23 rather than 25. Our BMI calculator uses these Asian-Indian thresholds so the result reflects real risk in an Indian body.
Are Cure.Care calculators free to use?
Yes. Every calculator on Cure.Care is completely free, with no sign-up or login required. You can use them as often as you like, on any device.
Are my results stored or shared?
No. The calculators run entirely in your browser. The numbers you enter are used only to show your result — they aren't saved to our servers or shared with anyone. When you close or refresh the page, the values are gone.
What should I do if a calculator shows a high or raised result?
Don't panic over a single number — a raised result is a prompt to follow up, not a diagnosis. Note the result, read the interpretation the tool provides, and book an appointment with a doctor who can assess your full situation and arrange any tests you need. You can also read more in our diabetes hub.
Reviewed by clinicians, built for trust
Every Cure.Care calculator is built on published clinical guidance, written in plain language, and checked by a qualified medical reviewer before it goes live. Tools are revisited as guidelines change — never left to drift.
These calculators are for education and screening only. They don't provide a diagnosis or replace professional medical advice. Always consult a qualified doctor about your health and before acting on any result. Read our full medical disclaimer.