Pregnancy Calculator
Estimated Due Date
-
Week 0
280 days left
Key Milestones
First Trimester ends: Week 12
Second Trimester ends: Week 27
Third Trimester: Week 28 onwards
How It Works
- Enter the first day of your last menstrual period.
- Click Calculate to estimate your due date.
- View your current pregnancy week and progress.
- See key milestone dates for each trimester.
- Track how many days remain until your due date.
Frequently Asked Questions
How is my due date calculated?
We use Naegele's Rule: add 280 days (40 weeks) to the first day of your last menstrual period. This assumes a 28-day cycle. For irregular cycles or IVF pregnancies, consult your healthcare provider for a more accurate date.
How accurate is the due date?
Only about 5% of babies are born on their exact due date. Most arrive between 38-42 weeks. This calculator provides an estimate - your doctor will confirm dates through ultrasound measurements, especially in early pregnancy.
Is this calculator free to use?
Yes, ApexSofteck Tools's Pregnancy Calculator is completely free. Use it unlimited times to track your pregnancy journey without any registration.
What are the three trimesters?
First trimester: weeks 1-12 (ends around day 84). Second trimester: weeks 13-27 (ends around day 189). Third trimester: weeks 28-40 until delivery. Each trimester brings different developments for your baby and changes for you.
Should I use this instead of my doctor's dates?
Always follow your healthcare provider's guidance. This calculator provides estimates for general reference. Your doctor uses ultrasound measurements and clinical assessment to determine the most accurate due date for your specific situation.