Pregnancy Calculator

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

Last updated: 2025-09-25

Due Date Calculator

Select calculation method and input relevant information to calculate due date and gestational age

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(days)

Important Notes

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