Pregnancy Due Date Calculator (Naegele)
Estimate your pregnancy due date and current gestational week using Naegele's rule from the first day of your last menstrual period.
Current Gestational Week
12 weeks
Current Gestational Week vs Days Since Last Period Started
सूत्र
## Naegele's Rule The estimated due date is 280 days (40 weeks) from the first day of the last menstrual period (LMP). **Due Date = LMP + 280 days** ### Trimester Breakdown | Trimester | Weeks | |---|---| | First | 1-12 | | Second | 13-27 | | Third | 28-40 | Only about 5% of babies are born on their exact due date. Most arrive within 2 weeks of the estimate.
हल किया गया उदाहरण
A woman whose last period started 84 days ago.
- 01Gestational week = floor(84 / 7) = 12 weeks
- 02Extra days = 84 - 12 x 7 = 0
- 03Days remaining = 280 - 84 = 196 days
- 04Weeks remaining = 196 / 7 = 28.0 weeks
अक्सर पूछे जाने वाले प्रश्न
How accurate is the due date?
Naegele's rule is an estimate. About 80% of babies are born between 38 and 42 weeks. An early ultrasound can refine the estimate.
What if my cycles are not 28 days?
Naegele's rule assumes a 28-day cycle with ovulation on day 14. If your cycles are longer or shorter, the due date may shift accordingly.
When is each trimester?
First trimester: weeks 1-12. Second trimester: weeks 13-27. Third trimester: weeks 28-40.
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