Pregnancy Due Date Calculator
Calculate pregnancy due date online instantly. Estimate expected delivery date, pregnancy week and trimester easily.
Last updated: October 2026
Free Online Pregnancy Due Date Calculator
Use this free online pregnancy due date calculator tool directly in your browser without installing software. Fast, mobile friendly and easy to use.
Pregnancy Due Date Calculator
Pregnancy Trimesters
| Trimester | Weeks |
|---|---|
| First Trimester | 1 – 13 |
| Second Trimester | 14 – 27 |
| Third Trimester | 28 – 40 |
About Pregnancy Due Dates
Pregnancy due dates are estimates based on standard pregnancy duration. Consult a healthcare professional for medical guidance and accurate prenatal care.
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About This Tool
About Pregnancy Due Date Calculator
This free online Pregnancy Due Date Calculator helps estimate your expected delivery date based on the first day of your last menstrual period (LMP).
The calculator also shows current pregnancy week, trimester and remaining days until delivery.
What This Tool Calculates
- Estimated due date
- Current pregnancy week
- Current trimester
- Days remaining
- Total pregnancy progress
Frequently Asked Questions
How is pregnancy due date calculated?
The estimated due date is typically calculated as 280 days (40 weeks) from the first day of the last menstrual period.
Is the due date always exact?
No. The due date is an estimate and actual delivery may happen earlier or later.
What is LMP?
LMP stands for Last Menstrual Period, commonly used to estimate pregnancy timelines.
Is this Pregnancy Due Date Calculator free?
Yes. This tool is completely free to use online.
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