Pregnancy typically lasts about 40 weeks (280 days) from the first day of your last menstrual period (LMP) to childbirth. The due date is an estimate, with only about 4% of births occurring on the exact due date. About 90% of births occur within two weeks of the due date.
• First Trimester: Weeks 1-13
• Second Trimester: Weeks 14-26
• Third Trimester: Weeks 27-40
• The due date is an estimate based on average pregnancy length
• Only about 4% of babies are born on their exact due date
• About 60% of babies are born within one week of their due date
• About 90% of babies are born within two weeks of their due date
• A pregnancy is considered full term between 37 and 42 weeks
Let's be honest:
You just peed on a stick, and now Google is your OB-GYN.
You're trying to figure out:
"How many weeks pregnant am I?"
"When is this baby due?"
"Why am I crying at a diaper commercial?"
Good news: our Pregnancy Calculator is here to take the math out of motherhood (and mood swings). It's free, instant, and doesn't require a login—or a therapist.
✅ Calculates your due date based on last menstrual period or conception
✅ Tracks how far along you are, week-by-week
✅ Tells you which trimester you're in (and when the nausea might chill)
✅ Helps you plan the baby shower, doctor appointments, and when to panic-buy onesies
✅ Works on any device — no app, no nonsense
Q: Is this like... accurate?
A: It uses medically backed formulas. It's not magic, but it's also not guessing like your aunt Karen.
Q: Do I need to download something?
A: Nope. This isn't 2007. Just bookmark and go.
Q: I don't know my exact LMP. What now?
A: That's okay — you can estimate using conception date or early ultrasound info. We're chill.
Q: Will this help deliver my baby too?
A: No. But it will deliver answers faster than your OB's voicemail.
Bookmark this page now. Use it to track your baby's progress, impress your partner with trimester trivia, or shut down unsolicited advice with cold, hard dates.
Because pregnancy is already full of surprises — your calculator shouldn't be one of them.