Free health calculators for Pakistan
Practical browser-based tools with visible sources and privacy-first calculations.

How we check calculators
Reproduce four sample calculations, read the formulas, and see what the checks can and cannot establish.
Take questions to your appointment
Choose and print medicine questions for a doctor or pharmacist. No patient details are requested.

Child Growth Percentile
Estimate child height, weight, BMI, and head circumference percentiles in browser.

Waist Ratio Calculator
Calculate waist-to-height and waist-to-hip ratios with South Asian cutoffs.

Calorie & Macro Calculator
Daily calories and macros with Pakistani food equivalents like roti, daal, and rice.

Period & Ovulation Tracker
Private cycle, ovulation, and fertile-window predictions stored only in the browser.

Sleep Calculator
Find bedtime or wake-up times with 90-minute sleep cycles and optional Fajr-aware mode.

Water Intake Calculator
Personalised daily hydration target by weight, climate, activity level, and Ramadan fasting — not the generic 8-glasses rule.

Ramadan Medication Planner
Personalised Ramadan timing plans for 16 common medicines, with city-specific fasting hours and clinical risk flags.

BMI Calculator
BMI with both WHO standard and South Asian (Pakistan) cutoffs — overweight ≥ 23, obese ≥ 27.5.

Pregnancy Due Date
Estimate due date (EDD) from LMP or conception date. Shows trimester, gestational age, and milestones.

Paediatric Dose Calculator
Weight-based Calpol (paracetamol) and Brufen (ibuprofen) doses for children — per-dose ml, interval, daily max.

eGFR Calculator
Estimate kidney function (eGFR) and CKD stage using the modern CKD-EPI 2021 race-free equation.

HbA1c Converter
Convert HbA1c (%) to estimated average blood glucose (mg/dL) using the ADAG formula, with ADA targets.

AQI Smog Risk Calculator
Check your health risk from today's AQI — outdoor activity guidance, mask advice, and sensitive-group mode for Pakistan smog.

Blood Pressure Checker
Enter systolic and diastolic readings to get your ACC/AHA 2017 category — Normal, Elevated, Stage 1, Stage 2, or Crisis.

Pregnancy Weight Gain
Check if your weight gain is on track using IOM 2009 targets by pre-pregnancy BMI — metric and imperial supported.

EPI Vaccine Schedule
Pakistan's official EPI 2024 immunisation schedule — enter your child's age to see which vaccines are due, overdue, or upcoming.

Heatstroke Risk Calculator
Heat index calculator for Pakistan summers — with activity level, age group, and hydration adjustments for Karachi, Lahore, and more.

Pack-Years Calculator
Calculate your smoking pack-years and USPSTF lung cancer screening eligibility, plus estimated cost in PKR.

WHO ORS & Dehydration Calculator
Calculate WHO Plan A & Plan B oral rehydration solution (ORS) volumes in mL and paediatric zinc doses by weight.
Deep-dive guides
Focused explainers under each calculator — answering the specific question behind the result.
When should I go to bed?
Bedtime targets by wake-up time using 90-minute sleep cycles.
When should I wake up?
Wake-up windows from a chosen bedtime — full cycles only.
How many hours of sleep do I need?
Sleep duration ranges by age, from infants to older adults.
Fajr-aware sleep schedule
Bedtime planning that respects Fajr prayer and a second sleep window.
Qailula nap calculator
Sunnah nap timing — 20-minute power nap windows between Zuhr and Asr.