Free medical calculators
Fast, accurate clinical calculators for doctors, students and patients in Pakistan — eGFR, BMI, creatinine clearance, HbA1c to average glucose, paediatric dosing, IV fluids, pregnancy due date and more. No sign-up. Every result can be shared straight to WhatsApp.
BMI & body surface area
eGFR (CKD-EPI 2021)
Creatinine clearance
HbA1c → average glucose
Paediatric weight-based dose
Maintenance IV fluids
Due date & gestational age
Corrected calcium
Ideal body weight
These calculators are a decision aid for information only. Always verify values and confirm with a qualified doctor — Shifaa does not diagnose or replace professional judgement.
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Frequently asked questions
What is a normal eGFR?
An eGFR of 90 or above is generally normal, 60–89 is mildly reduced, and below 60 for three or more months suggests chronic kidney disease. This tool uses the race-free CKD-EPI 2021 equation with age, sex and serum creatinine.
How is BMI calculated?
BMI is weight in kilograms divided by height in metres squared. For South Asian populations, including Pakistanis, health risk begins to rise above a BMI of 23 and is high above 27.5.
What does HbA1c mean in average blood sugar?
Estimated average glucose (eAG) in mg/dL is 28.7 × HbA1c% − 46.7. For example, an HbA1c of 7% is roughly an average glucose of 154 mg/dL.
How do I calculate a pregnancy due date?
Naegele's rule estimates the due date as the first day of the last menstrual period plus 280 days (40 weeks). This tool also shows the current gestational age in weeks and days.
Are these medical calculators free?
Yes. All calculators are free and need no sign-up. To also understand your full lab report in plain English or easy Urdu, upload it to Shifaa.
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