Pregnancy Due Date Calculator
Estimate a due date and current pregnancy week from the last menstrual period or conception date.
Result
- Estimated due date
- October 8, 2026
- Estimated gestation today
- 39 weeks 6 days
- Estimated conception
- Jan 15, 2026
About this calculator
A standard estimate is 280 days from the first day of the last menstrual period. Actual delivery dates vary and clinical dating may differ.
Frequently asked questions
- What does the Pregnancy Due Date Calculator do?
- Estimate a due date and current pregnancy week from the last menstrual period or conception date. A standard estimate is 280 days from the first day of the last menstrual period. Actual delivery dates vary and clinical dating may differ.
- Is the Pregnancy Due Date Calculator free to use?
- Yes. Every calculator on Calcurly.com is free, works in your browser without sign-up, and can be embedded on your own website.
- How accurate is the Pregnancy Due Date Calculator?
- Results are calculated in real time using industry-standard formulas. Treat the output as a well-informed estimate — always cross-check with local regulations, product datasheets, or a qualified fitness & health professional before committing to a purchase or a job.
- What inputs does the Pregnancy Due Date Calculator need?
- Enter values for: LMP year, LMP month, LMP day, Typical cycle length (days). Sensible defaults are pre-filled where possible so you can start with a single change.
- Can I embed the Pregnancy Due Date Calculator on my own website?
- Yes — copy the iframe snippet at the bottom of this page, or use the Embed Generator to customise the size. The embedded version stays in sync with the live calculator on Calcurly.com.
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