Pregnancy Due Date Calculator
Calculate your estimated due date and track pregnancy milestones.
2026 Tax YearData stays on your deviceUpdated Apr 1, 2026
Estimated Due Date
December 13, 2026
Week 8 of 40Trimester 1
Week 0Week 13Week 27Week 40
Days Remaining
223
Current Week
Week 8
Trimester 1
Estimated Conception
March 22, 2026
Progress
20%
| 1st Trimester | March 8, 2026 - June 7, 2026 |
| 2nd Trimester | June 7, 2026 - September 13, 2026 |
| 3rd Trimester | September 13, 2026 - December 13, 2026 |
Frequently Asked Questions
How is the due date calculated?
The due date is estimated at 280 days (40 weeks) from the first day of your last menstrual period (LMP). This is called Naegele rule. Only about 5% of babies are born on their exact due date.
What are the trimesters?
First: weeks 1-12 (organ development). Second: weeks 13-26 (growth, movement). Third: weeks 27-40 (maturation, preparation for birth).
Official Data Sources
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Built and reviewed by Konstantin Iakovlev · Data from CRA, CMHC, Bank of Canada · MethodologyDisclaimer: This calculator provides estimates based on publicly available data from CRA and other government sources. It does not constitute financial advice. Consult a qualified advisor for decisions about your specific situation.
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