Your due date is probably wrong — the standard method can be up to two weeks out, which changes everything when you’re facing pressure to induce. Work yours out four evidence-based ways below.
FEARLESSBIRTHING
Free tool · Due date calculator
Fearing the countdown to your due date?
Here's something most people don't realise: your due date is probably wrong. The standard method doctors use — Naegele's Rule — was inspired by the Bible, not evidence, and it can be up to two weeks out.
That matters enormously when you're being pushed towards induction. This calculator works out your due date four different ways — the standard one, plus three grounded in research — so you can stop fixating on a single date and feel calmer as your baby's arrival approaches.
Unlock the calculator
Pop in your details and it opens straight away.
FEARLESSBIRTHING
Your details
Let's work out your due dates
Three quick things. Everything stays on your device.
FEARLESSBIRTHING
Your results
Here are your due dates
Most likely window
—
Your baby may not be as "late" as you're led to believe. A due date is an estimate, not a deadline — only around 1 in 20 babies actually arrives on the date itself. Knowing your range can help you feel steadier, and more in control, in those final weeks.
This tool is for information only and doesn't replace medical advice. If your pregnancy involves complications, or you have a condition needing close medical supervision, please follow the guidance of your midwife or doctor. Methods shown: Naegele's Rule (standard); Park, 1968; Nichols, 1985; Mittendorf et al., 1990.
Your baby may not be as "late" as you're led to believe. A due date is an estimate, not a deadline.
For information only — not a substitute for medical advice. If your pregnancy involves complications or needs close medical supervision, follow your midwife or doctor. Methods: Naegele's Rule (standard); Park, 1968; Nichols, 1985; Mittendorf et al., 1990. · A free tool from Fearless Birthing · fearless-birthing.com