Pregnancy Calculator – Due Date & Week Tracker
The Pregnancy Calculator helps you estimate your due date, current pregnancy week, trimester, and conception date based on your last menstrual period (LMP) or known conception date. It’s an essential tool for expectant mothers, midwives, and obstetricians.
How to Use the Pregnancy Calculator
You can choose one of the following inputs:
- LMP (Last Menstrual Period) – most common method
- Conception Date – if known from ovulation tracking or IVF
- Ultrasound Date – for medical accuracy
The calculator will estimate your:
- Due Date (EDD)
- Current Week and Day of Pregnancy
- Gestational Age
- Trimester and important milestones
Pregnancy Due Date Formula
EDD (Estimated Due Date) = LMP + 280 days (40 weeks)
OR
EDD = Conception Date + 266 days
Example
LMP: March 1
→ Due Date = March 1 + 280 days = December 6
→ Current week (as of today): Week 24
→ Second Trimester
Common Use Cases
- Pregnancy tracking for expectant mothers
- Planning doctor visits and tests
- IVF or ART pregnancy calculations
- Hospital and maternity care scheduling
- Monitoring fetal development milestones
Why Use a Pregnancy Calculator?
This tool helps in planning prenatal care, setting realistic expectations, and tracking the baby's growth. It's a convenient way to stay informed during each stage of your pregnancy journey.
Frequently Asked Questions (FAQs)
How accurate is the pregnancy calculator?
It provides an estimate based on standard gestation. Ultrasound scans are more precise, especially in early pregnancy.
Can I use it for IVF?
Yes, if you know your fertilization or embryo transfer date, select the conception method and the calculator will adjust accordingly.
What if I don’t remember my LMP?
Use your ultrasound scan date or estimated conception date for best accuracy.
How many weeks is full-term pregnancy?
A full-term pregnancy is typically 40 weeks, but anywhere from 37 to 42 weeks is considered normal.
Does this calculator account for leap years?
Yes, it automatically adjusts for leap years in the date calculation.
Related tools: Ovulation Calculator, DOB Calculator.