This Pregnancy Trimester Calculator helps you determine your pregnancy week, trimester, due date, and how many days remain until delivery. Just enter the first day of your last menstrual period (LMP) to get an instant, accurate result using the standard 40-week model.

Pregnancy Trimester Calculator — Week & Due Date Estimator

Pregnancy Trimester Calculator

Find your trimester, estimated due date, progress and days remaining.
How to use: Select the first day of your last menstrual period (LMP) and the calculator will estimate your current week, trimester, due date, and days remaining.

Why use: Helps track pregnancy progress, understand trimester phase, and plan appointments or checkups.

Benefits:
• Fast trimester calculation
• Instant due date estimate
• Works offline
• 100% private
• Simple and accurate 40-week method

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