Pregnancy Due Date Calculator
Disclaimer: For informational purposes only. Always consult a qualified healthcare provider for medical, fitness, or nutrition advice.
Your Pregnancy Overview
| Milestone | Date |
|---|---|
| Positive Test (≈4w 0d) | — |
| Heartbeat Detectable (≈6w 0d) | — |
| End of Trimester 1 (13w 6d) | — |
| Viability Threshold (≈24w 0d) | — |
| End of Trimester 2 (27w 6d) | — |
| Start of Trimester 3 (28w 0d) | — |
| Full Term (37w 0d) | — |
| Due Date (40w 0d) | — |
| Late Term (41w 0d) | — |
| Post Term (42w 0d) | — |
This tool provides estimates and is not a substitute for professional medical advice.
Pregnancy Due Date Calculator – Track Every Stage of Your Pregnancy
Take the guesswork out of your pregnancy journey with our all-in-one Pregnancy Due Date Calculator and Week-by-Week Tracker. Designed for simplicity and accuracy, this tool helps you predict your baby’s arrival date while showing a clear timeline of milestones, trimesters, and progress.
How It Works
You can calculate your due date in two ways:
By Last Menstrual Period (LMP): Enter the first day of your last period and your average cycle length (default 28 days, adjustable 20–45). The calculator adjusts your due date based on your cycle.
By Conception Date: If you know the exact conception date, enter it directly for an instant calculation.
What You’ll Get
With just a few inputs, the calculator provides:
- Estimated Due Date (EDD): LMP + 280 days (adjusted for cycle) or 266 days from conception.
- Gestational Age: See how far along you are in weeks and days—or how long until pregnancy begins if entering a future date.
- Trimester Tracker: Identifies whether you’re in the 1st, 2nd, or 3rd trimester.
- Estimated Conception Date: Based on ovulation if using LMP.
- Pregnancy Progress Bar: A clear percentage showing how much of your 40-week journey is complete.
Key Pregnancy Milestones
Our calculator highlights the important stages of pregnancy so you know what’s coming next:
- Positive Test (≈4 weeks)
- Heartbeat Detectable (≈6 weeks)
- End of Trimester 1 (13w 6d)
- Viability Threshold (≈24 weeks)
- End of Trimester 2 (27w 6d)
- Start of Trimester 3 (28 weeks)
- Full Term (37 weeks)
- Due Date (40 weeks)
- Late Term (41 weeks)
- Post Term (42 weeks)
Extra Features
- Print-Friendly View: Clean output without extra clutter.
- Save PNG: Download a high-quality image snapshot of your pregnancy overview.
- Export PDF: Professional PDF export powered by Dompdf—perfect for saving or sharing with family, midwives, or doctors.
Who It’s For
👩🍼 Expectant parents tracking pregnancy week by week
👨👩👧 Partners and family members staying involved
🩺 OB-GYNs, midwives, and educators needing quick references
📊 Health coaches, doulas, and support groups looking for visual pregnancy timelines
Common Questions (FAQs)
How accurate is a due date calculator?
Due dates are estimates—only about 5% of babies arrive exactly on schedule. This calculator provides a reliable medical guideline, but real delivery can be earlier or later.
Does cycle length matter?
Yes. If your cycle is longer or shorter than 28 days, adjusting the cycle length gives a more personalized estimate.
What’s the difference between gestational age and fetal age?
Gestational age counts from your last period, while fetal age begins at conception (≈2 weeks later). Our tool shows both perspectives.
Why Parents Love It
- Week-by-week pregnancy calculator and trimester tracker
- Gestational age calculator with milestones built in
- Due date predictor based on LMP or conception date
- Printable pregnancy chart, PNG snapshot, and PDF export
- Easy to use, accurate, and emotionally reassuring
👉 Plan ahead with confidence, celebrate milestones, and track your pregnancy progress from the first heartbeat to full term—all in one simple, powerful tool.