Find out your due date with our Pregnancy Due Date Calculator.
Based on a 28-day menstrual cycle we use Naegele’s Rule, is a standard way of calculating the due date. Actually about 2 weeks later is when you conceive (your pregnancy date is 2 weeks behind your fetal development).
Naegele’s Rule
First day of the last menstrual period (LMP), count back 3 months, add 7 days and add 1 year
Example:
LMP: December 18, 2018
| Month | Day | Year |
| 12 | 18 | 2018 |
| -3 | +7 | +1 |
| 9 | 25 | 2019 |
If you were tracking your ovulation and you know the day you conceived, we can calculate your due date by counting 38 weeks from that date.
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