Pregnancy Calculator - Free Health & Fitness Calculator | NexUtils
Free pregnancy calculator to track and improve your health goals. Get instant results and personalized insights. Easy to use and completely free.
Pregnancy Calculator
Track Your Journey
History
About Pregnancy Calculator
A pregnancy calculator estimates your baby’s due date based on the first day of your last menstrual period (LMP). Most pregnancies last about 40 weeks (280 days). This tool helps you track your journey, understand trimester breakdowns, and anticipate key development milestones.
How to Use This Tool
Enter LMP
Select the first day of your Last Menstrual Period.
Calculate
Get an instant estimate of your due date and current progress.
Track History
Your calculations are saved locally so you can revisit them anytime.
Export
Download a PDF report of your pregnancy timeline.
Frequently Asked Questions
How accurate is this calculator?
It uses the standard Naegele’s Rule (LMP + 280 days). Only 5% of babies are born on their exact due date, but it is a good estimation.
What if my cycle is irregular?
This calculator assumes a 28-day cycle. If yours varies significantly, an ultrasound scan is the most accurate way to date a pregnancy.
When does the first trimester end?
The first trimester usually ends at the completion of week 12. The second trimester runs from week 13 to 27.
Key Features
- •Due Date Estimation
- •Trimester & Week Tracking
- •Baby Development Milestones
- •Local History Storage
- •PDF Report Generation
Understanding Pregnancy Calculator
Pregnancy is measured from the first day of your last period, not the day of conception. This means you are technically considered "pregnant" about two weeks before conception actually occurs.
Why Pregnancy Calculator Matters
Helps you plan for prenatal care, schedule scans, and mentally prepare for your baby's arrival.
Limitations of Pregnancy Calculator
While this tool is useful, keep in mind:
- Estimates based on average 28-day cycles.
- Does not replace professional medical advice or ultrasound dating.