Pregnancy Calculator

Calculate pregnancy due date, gestational age, and conception date using multiple methods

最後更新: 2025-09-25

Due Date Calculator

選擇計算方法並輸入相關資訊以計算預產期和孕週

Select Calculation Method

Last Menstrual Period (LMP)

Gestational Age + Ultrasound Date (EGA)

Estimated Date of Conception (EDC)

Estimated Due Date (EDD)

Last Menstrual Period Date

Cycle Length(天)

重要提示

First trimester ultrasound is the most accurate method for determining gestational age, with only ±3-5 days margin of error.

This calculator is for reference only. All pregnancy management should be conducted under professional medical guidance.

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Privacy Notice

Your pregnancy data is processed locally and never stored on our servers.