How Many Weeks Pregnant Am I?
Want your due date instead? Try the Due Date Calculator.
How to Use the Pregnancy Week Calculator
- Enter the first day of your last menstrual period (LMP).
- Click Calculate Weeks Pregnant.
- The tool counts the number of days between your LMP and today.
- It converts that number into weeks + days.
This calculator is perfect for anyone wanting to quickly figure out:
- “How many weeks pregnant am I today?”
- “How far along am I based on my last period?”
- “What week of pregnancy am I in right now?”
Everything is based on simple date math.
FAQ
How does this calculator determine how many weeks pregnant I am?
It counts the number of days since your LMP and divides by 7. This is the standard method used for pregnancy week calculations.
Why does pregnancy start at the LMP date?
Because pregnancy dating uses the 40 week model, which includes the two weeks before ovulation. This is the universal baseline for pregnancy week math.
Is this the same as a gestational age calculator?
Yes — gestational age and pregnancy weeks are calculated the same way using LMP.
Does this give a medically verified pregnancy week?
No — this is a date math calculator only, not medical advice. It simply counts weeks from your LMP.
Can this help with pregnancy timelines?
Yes. Many people use this tool for:
- “how many weeks pregnant am I calculator”
- “pregnancy week by date calculator”
- “gestational age from LMP”
It’s a quick way to understand where you are in the 40 week timeline.