Practical tools

Women’s health calculators

Simple estimates for planning and discussion with your clinician. They are not diagnostic tools.

Estimated due date

First day of last menstrual period

Your estimate will appear here.

Adult BMI

Weight (kg)Height (cm)

Your result will appear here.

Estimated fertile window

First day of current cycleUsual cycle length

Your estimate will appear here.

Important: These tools use standard population-level formulas. Irregular cycles, fertility treatment, pregnancy complications and individual health conditions require personalised assessment.