HIGH-DEMAND HEALTH ESTIMATES WITH LIMITS
Pregnancy Week Calculator India
Estimate gestational weeks, days, and an expected due date from the first day of the last menstrual period and a reference date.
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Your result
Ready when you are.
Enter your values and choose Calculate. Your inputs stay on this device.
How it works
Gestational age = calendar days since LMP; expected due date = LMP + 280 days.
Assumptions and limits
Initial dating convention assumes a reliable LMP and typical cycle. Ultrasound and clinical assessment may revise the estimated gestational age.
About this calculator
This calculator provides an initial LMP-based calendar estimate and does not confirm pregnancy or replace clinical dating.
What this tool helps you check
Estimate gestational age from LMP and a reference date with clear dating and care limitations.
How to use it
- Review the formula and assumptions shown for this pregnancy week calculator india.
- Enter the first day of the last menstrual period and the date for which you need the estimate.
- Calculate and review completed weeks, days, and the estimated due date.
- Contact a qualified professional for dating, symptoms, tests, pain, bleeding, or any concern.
Source and update
Last reviewed: 2026-08-22
ACOG — Methods for Estimating the Due DateFrequently asked questions
What does this pregnancy week calculator india calculate?
This calculator provides an initial LMP-based calendar estimate and does not confirm pregnancy or replace clinical dating.
How should I interpret the result?
Review completed weeks, days, and the estimated due date. The result changes whenever an input or assumption changes.
Is the result official or guaranteed?
Contact a qualified professional for dating, symptoms, tests, pain, bleeding, or any concern.
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