Labor Probability Calculator

When Might Labor Begin?

Enter how many days/weeks you've been pregnant to see an estimate of when you'll give birth.


The story behind this calulator: When we were about to have our first child, it was hard to find an easy to use calculator to figure out what the likelihood of giving birth in each week was, so I built this for our own use. Hope you find it helpful!


Disclaimer: This calculator provides generalized, illustrative probabilities only and does not constitute medical advice, diagnosis, or treatment. It is intended for informational purposes and should not be used as a substitute for professional medical guidance from a qualified healthcare provider. Always consult with your doctor or a healthcare professional for any health concerns or before making any decisions related to your health or pregnancy.

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