Free tools
Pregnancy and fertility calculators
Simple, private calculators for every season - from finding your fertile days to working out your due date and your baby's age. Each one explains the method it uses, and nothing you type ever leaves your browser.
Trying to conceive
Pregnancy
-
Due date calculator
From your last period, conception date, IVF transfer or scan result.
Open calculator -
How far along am I?
Weeks and days pregnant, trimester and days to go.
Open calculator -
Conception date calculator
When you most likely conceived.
Open calculator -
Pregnancy weight gain
Healthy gain ranges for your BMI, week by week.
Open calculator -
hCG doubling time
How fast your hCG rose between two tests.
Open calculator
