Life Milestones & Age

Pregnancy Due-Date Calculator

Estimate your due date, current gestational week, and trimester timeline using LMP or conception date.

Standard cycle is 28 days. Adjust if your cycle is shorter or longer.

Calculation Result

Instant
2027-05-11
Estimated Due Date (Tuesday) • Current: 8 weeks, 0 days (Week 8)
Estimated Due Date
2027-05-11
Conception Date
2026-08-18
Days Remaining
224 Days
Trimester 1 End
2026-11-03
Medical Note: This tool provides educational estimates based on standard averages. It is not intended as medical advice or clinical diagnosis.

About Pregnancy Due-Date Calculator

Calculate estimated pregnancy due dates, gestational milestones, and trimester transitions using established clinical formulas.

Calculation Methodology & Formula

Uses Naegele’s Rule (LMP + 280 days adjusted for menstrual cycle length) or Conception Date (+ 266 days).

How to Use This Calculator

  1. Choose calculation method: First Day of Last Period (LMP) or Date of Conception.
  2. Enter the date and your average cycle length in days.
  3. Click "Calculate Due Date".

Frequently Asked Questions

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