Pregnancy Week Calculator—Track Your Baby’s Growth Week-by-Week

Pregnancy Week Calculator
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Pregnancy Week Calculator

This calculator provides estimates based on a 280-day pregnancy. Always consult your healthcare provider for accurate information.

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Enter your LMP date and click calculate to see your pregnancy details

Your Pregnancy Details

Current Week: –
Trimester: –
Due Date: –
Days Until Due: –
Total Days Pregnant: –

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Welcome to your trusted Pregnancy Week Calculator, designed to help you follow your baby’s development one week at a time. Whether you’re an expecting mother, a partner, or simply curious, this free online tool gives you precise information about how far along you are — without needing to download anything.
Known in Japan as 妊娠計算機 (Ninshin Keisanki) or 妊娠週数計算, our platform supports global users in multiple languages with complete ease.

🧮 What Is an Accounting Calculator?

A Pregnancy Week Calculator helps you understand:Gross & Net Profit Calculations

  • Your current week of pregnancy
  • Your expected due date
  • What trimester you’re in

By simply entering the first day of your last menstrual period (LMP) or your estimated conception date, the tool instantly calculates how far along you are — in both weeks and days.

How It Works?

  • Total weeks and days of pregnancy so far
  • Estimated Due Date (EDD)
  • Time remaining until delivery
  • Your current trimester (1st, 2nd, or 3rd)

Just provide:

  • LMP date or conception date
  • Hit Calculate and receive an accurate pregnancy timeline right away.

Why Use Our Online Pregnancy Calculator?

Mobile-friendly iworks on all devices

100% Free with no ads or subscriptions

Uses medical-grade calculations

Private and secure — no data stored

Multilingual Use (妊娠計算機)

How to Use the Age Calculator?

Enter LMP or conception date

Click “Calculate Pregnancy”

View week, day, trimester

Save or bookmark for weekly check

Frequently Asked Questions(FAQ):

Yes! This tool uses LMP or conception data to accurately estimate your due date.

Yes, it works for both use cases.

It’s based on global OB-GYN formulas and provides medically reliable results. For exact data, ultrasound is still the gold standard.

Absolutely! The sooner you start tracking, the more accurate your timeline will be.