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Free calculators

Calculators for patients and doctors

Each one tells you what the number means and what to do next, not just the number. They run on your phone or computer: nothing you type is sent anywhere.

For patients and doctors

Illustration: a calculator, a gauge dial, two sliders and a small bar chart
Diabetes · New

Heart and kidney risk in type 2 diabetes

Three risks from one set of reports: your 10-year heart attack and stroke risk, your kidney risk category and 5-year kidney failure risk, what is pushing each one up, and what would change if you fixed one thing. Doctors get the ESC 2023 category with the criteria met, the UKPDS engine, the KDIGO grid with KFRE, and a checklist of what this patient should be on and is not.

Brain and blood vessels · New

Stroke in the young: cause finder

A stroke or mini-stroke under 50: which causes have been checked, which tests are still missing and in what order, and what prevents another one. Covers blocked arteries, TIA, clots in brain veins and bleeds. Doctors get the cause category, the young-stroke work-up, RoPE and PASCAL for a PFO, and treatment by cause.

Stomach and bowels · New

IBS check

Belly pain with loose motions or constipation: whether it fits irritable bowel syndrome, which type, how severe, the warning signs that need a doctor first, and what helps. Doctors get Rome IV and Rome III, the baseline tests, the medicines and diabetes problems that copy IBS, and treatment by type.

Infections · New

Fever under evaluation

Dengue, malaria, typhoid, scrub typhus or a simple viral fever: how urgent your fever is, which test is right on which day of illness, safe home care and the warning signs. Doctors get qSOFA and NEWS2, the syndromic approach and treatment notes from the Indian guidelines.

Blood · New

Anaemia under evaluation

How low your haemoglobin is, what type of anaemia your report shows, whether it is iron, B12, thalassaemia trait, kidneys or something else, and the next tests in order. Doctors get iron indices with the right cut-off, the reticulocyte index and the source work-up.

Diabetes in pregnancy · New

Gestational diabetes planner

What your glucose test result means (DIPSI or the fasting test), a home sugar log marked against the pregnancy targets, and the test dates after delivery, saved to your phone calendar. Doctors get when to start a medicine, insulin starting doses and titration, and a printable patient card.

Diabetes · New

What is my diabetes type?

Type 1, LADA, type 2 and its four Indian patterns, MODY, ketosis-prone, pancreatic, medicine-induced or gestational: what your history and tests point to, which single test would settle it, and what the answer changes about treatment. Doctors get the ADA/EASD pathway, the Fourlanos and MODY screens and a copyable summary.

Heart · New

Heart failure check

Your stage from symptoms, NT-proBNP and echo, what the blood test means at your age, which test comes next and how soon, and a daily plan if you have heart failure. Doctors get the cut-off for this patient, the type by ejection fraction, two risk scores, and treatment by blood pressure, potassium and eGFR, including diabetes medicines.

Kidneys · New

eGFR and kidney disease

Your kidney number from creatinine or cystatin C, your stage with the urine test, how often to check, and when to see a specialist. Doctors get equations, kidney failure risk, trend and medicine doses.

Diabetes · New

Ramzan fasting risk

The 2026 international score for fasting with diabetes: your risk level and what drives it, when to break the fast and when to test. Doctors get a medicine plan for the month and a titration table.

Diabetes · New

CGM report reader

Upload the file from FreeStyle Libre, Dexcom or CareLink, or type in the report numbers: time in range against the consensus targets, lows and when they happen, your typical day, day-by-day bars, and what to do next. Doctors get the full panel with GRI.

Diabetes · New

Diabetes medicines before surgery

A dated plan for tablets, injections and insulin before and after an operation, colonoscopy or bariatric surgery: what to stop and when, the insulin dose to take, and when to restart. Prints and saves to a phone calendar.

Heart · New

Lp(a) heart risk check

What your Lp(a) result means, your 10- and 30-year heart attack and stroke risk with and without it, your LDL cholesterol goal and the medicine steps to reach it, and who in the family should be tested.

Diabetes · New

Diabetic foot risk check

A one-minute toe touch test for home, the doctor's foot examination, IWGDF and NICE risk grades, when the next foot check is due, and a foot care plan.

Diabetes · New

Steroid high sugar planner

When to test on steroids, what the readings mean, how to adjust gliclazide or insulin, and a day-by-day plan as the steroid is reduced.

Vaccination · New

Adult vaccine planner

Which vaccines are due for your age, health, pregnancy, work and travel, what you have already had, and the date of every remaining dose. Prints, and saves to a phone calendar.

Anaemia

Iron infusion dose and cost

Weight and haemoglobin in: total iron needed, number of sittings and the cost.

For doctors

Weight, diabetes risk and liver