Health Calculators

Quick reference tools for antenatal visits — no need to reach for a separate app or do the maths by hand.

These calculators are quick-reference tools only and don't replace clinical judgment or the patient's full record in GraviLog EMR.

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Pregnancy Due Date Calculator

Calculate gestational age and estimated due date from the first day of the last menstrual period (LMP).

First day of last menstrual period

Average cycle length (days)

Please enter a valid LMP date.

Gestational age today —

Estimated due date (EDD) —

Days until due date —

Current trimester —

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BMI Calculator

Pre-pregnancy or baseline BMI, useful for weight-gain guidance during antenatal visits.

Weight (kg)

Height (cm)

Please enter valid weight and height.

BMI —

Category —

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Want the full picture?

These quick calculators are handy for a fast check — but a patient's full obstetric history, trend lines, and visit-by-visit tracking live in the GraviLog EMR record.

Every pregnancy calculation here is done automatically inside a patient's chart the moment you log her LMP — no separate tool needed once she's in the system.

See GraviLog EMR plans