Health
Pregnancy Due Date
Estimate a baby’s due date from the last menstrual period (LMP) and track trimester milestones with a cycle-length adjustment.
Naegle’s rule with cycle-length adjustment and milestone checkpoints.
Naegle’s rule with cycle offset
Due date = LMP + 280 days + (cycle length − 28)
The tool maps Naegele’s rule to your specific cycle. It also projects second trimester (13 weeks) and viability (24 weeks) checkpoints from the same starting date.
How to use
- Select the LMP date on the calendar input.
- Enter your average cycle length (default 28 days).
- Review the due date, weeks along as of today, trimester stage, and milestone dates.
Example
Input: LMP = 15 Jan 2024, Cycle length = 28 days
Output: Estimated due date = 21 Oct 2024, Second trimester begins = 15 Apr 2024, Viability (24 weeks) = 1 Jul 2024
Student-friendly breakdown
This walkthrough emphasizes the most searched ideas for Pregnancy Due Date: pregnancy due date calculator, pregnancy calculator, due date calculator, pregnancy week calculator. Start with the formula above, then follow the guided steps to double-check your work. For quick revision, highlight the givens, plug into the equation, and finish by verifying your units.
Need more support? Use the links below to open the long-form guide, browse additional examples, or hop into adjacent calculators within the same topic. Each resource is interlinked so crawlers (and readers) can discover the next best action within a couple of clicks—one of the easiest ways to lift topical authority.
Deep dive & study plan
The Pregnancy Due Date is a go-to tool whenever you need to lmp-based due date with trimester milestones.. It focuses on pregnancy, due date, trimester, which means searchers often arrive with intent-heavy queries like “how to pregnancy due date quickly” or “pregnancy due date formula explained.” Use this calculator to capture those intents and keep learners on the page long enough to send positive engagement signals.
Under the hood, the calculator leans on the tool maps naegele’s rule to your specific cycle. it also projects second trimester (13 weeks) and viability (24 weeks) checkpoints from the same starting date.—that’s why we surface the full expression (“Due date = LMP + 280 days + (cycle length − 28)”) directly above the interactive widget. When you embed that formula inside H2s or supporting paragraphs, you help both humans and crawlers understand what entity the page represents.
Execution matters as much as the math. Follow the built-in procedure: Step 1: Select the LMP date on the calendar input. Step 2: Enter your average cycle length (default 28 days). Step 3: Review the due date, weeks along as of today, trimester stage, and milestone dates.. Each numbered instruction is short enough to scan on mobile but descriptive enough to satisfy Google’s Helpful Content guidelines. Encourage students to jot down units, double-check signs, and compare answers with the Example card to build confidence.
The Example section itself is packed with semantic clues: “LMP = 15 Jan 2024, Cycle length = 28 days” leading to “Estimated due date = 21 Oct 2024, Second trimester begins = 15 Apr 2024, Viability (24 weeks) = 1 Jul 2024.” Pepper similar narratives throughout your copy (and internal links from related guides) so canonical search intents are answered without pogo-sticking back to Google.
Quick retention checklist
- Speak the formula aloud (or annotate it) so the relationships stick.
- Write each step in your own words and compare with the numbered list above.
- Swap in new numbers for the Example to make sure the calculator (and your logic) handles edge cases.
- Link out to at least two related calculators to keep readers exploring your topical hub.
FAQ & notes
What if my cycles are irregular?
Use your best average. For significantly irregular cycles, confirm timelines with an ultrasound for maximum accuracy.
Does this replace medical advice?
No. The calculator offers an educational estimate and should be validated with your healthcare provider.
What formula does the Pregnancy Due Date use?
The tool maps Naegele’s rule to your specific cycle. It also projects second trimester (13 weeks) and viability (24 weeks) checkpoints from the same starting date.
How do I use the Pregnancy Due Date?
Select the LMP date on the calendar input. Enter your average cycle length (default 28 days). Review the due date, weeks along as of today, trimester stage, and milestone dates.