Inputs

Enter the first day of your last menstrual period

days

Average length of your menstrual cycle (usually 28 days)

Results

Please enter valid data to calculate results

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Guide

How to Use This Calculator

  1. Choose your preferred calculation method
  2. Enter the required date information
  3. Input your cycle length if using LMP method
  4. Review your due date and pregnancy milestones

Calculation Methods

  • • Most accurate method using last menstrual period date
  • • Use if you know the exact conception date
  • • Calculate backwards from a known due date

Important Notes

  • • Due dates are estimates with ±2 weeks accuracy
  • • Track all prenatal appointments and tests
  • • Consult your healthcare provider for medical advice