qaafPakistan calculators

Health calculators

BMI with Asian cut-offs, pregnancy due date, ovulation and period dates, calories, ideal weight, body fat and eGFR, each using a named clinical method.صحت

These calculators use published clinical formulas and name the method on every page, so you can check the working or show it to your doctor. They give estimates, not diagnoses.

For weight, start with the BMI calculator. It shows the WHO international categories and the lower WHO Asian cut-offs of 23 and 27.5 that suit Pakistani adults, and takes height in feet and inches. The calorie calculator turns a weight goal into a daily target, and the ideal weight calculator and body fat calculator give a second view.

For pregnancy and cycles, the pregnancy calculator gives your due date and week from your last period, conception or IVF transfer. The ovulation calculator and period calculator project the coming months. For kidney function, the eGFR calculator uses the CKD-EPI 2021 equation.

BMI calculatorBMI in kg and feet with WHO international and Asian cut-offs, and your healthy weight.Pregnancy calculatorDue date, pregnancy week, trimester and scan dates from LMP, conception or IVF.Ovulation calculatorOvulation day and fertile window for your next cycles from your last period.Period calculatorNext period dates for up to 12 months, with fertile days in each cycle.Calorie calculatorBMR, TDEE and daily calorie targets to lose, keep or gain weight.Ideal weight calculatorIdeal body weight range by height from four formulas and the healthy BMI range.Body fat calculatorBody fat percentage from tape measurements with the US Navy formula.eGFR calculatoreGFR from creatinine with the CKD-EPI 2021 equation, with the KDIGO stage.

Methods used

Calculator Method
BMI WHO classification (2000) and WHO Asian cut-offs (Lancet 2004)
Pregnancy Naegele's rule with cycle adjustment; ACOG dating for IVF
Ovulation and period Calendar method with a 14-day luteal phase; fertile window from Wilcox and others (1995)
Calories Mifflin-St Jeor equation (1990) with activity factors
Ideal weight Devine, Robinson, Miller and Hamwi formulas
Body fat US Navy tape method (Hodgdon and Beckett, 1984)
eGFR CKD-EPI 2021 creatinine equation without race; KDIGO stages

These tools are for information only. They do not diagnose any condition. Talk to a doctor before making decisions about your health, pregnancy, diet or treatment.

Common questions

Why does the BMI calculator show two categories?

WHO uses 25 and 30 as the overweight and obesity cut-offs worldwide, but found that Asian populations face higher risks of diabetes and heart disease at lower BMIs. It suggested 23 and 27.5 as action points for Asians. Both are shown so you can see where you stand on each.

Can I use these calculators for children?

Mostly no. BMI for anyone under 18 is judged on growth charts for age and sex, so the calculator shows the number but no category. The calorie and eGFR calculators are for adults only. Ask a doctor to check a child's growth.

How accurate is a due date calculator?

It follows the same rule doctors use, 280 days from the first day of the last period, adjusted for cycle length. An early scan is more accurate, and most babies arrive between 37 and 42 weeks. Once you have a scan date, enter it to track your weeks.