Enter your due date to see the chance of giving birth on each date around it. The chart shows daily birth probabilities, your most likely week of delivery, and how often births happen early or late compared with the due date.
Birth probability calendar
Summary
* The daily percentages show how the estimated birth timing is spread across the calendar. The daily values total 100%; your delivery date may differ.
Do not know your due date yet?
Use the Pregnancy Due Date Calculator to estimate your EDD, then come back to see your birth probability calendar.
How to use this calculator
- Enter your due date: type or pick your estimated due date (EDD) in the date box.
- Press the button: select "Show birth probability calendar" to run the calculation.
- Read the calendar: use the left and right arrows to move between months and see how the colour and percentage change for each day around your EDD.
- Check the summary: look at the summary card under the calendar for your most likely birth window and the single day with the highest chance of labor.
If you are not sure of your estimated due date, you can work it out first with the Pregnancy Due Date Calculator. This tool is for education only and does not replace care from your clinician.
How the birth calendar is calculated
The calendar places a daily timing distribution around your due date. The daily percentages are adjusted in the same proportion so they total 100%. This keeps the same peak and relative pattern. The highlighted window and highest-probability day use this same distribution. Rounding is balanced across the days so the displayed percentages also total 100.0%.