About EasyDueCalc

🌸 Our Mission

EasyDueCalc was built to empower expecting parents with an instant, private, and beautifully simple way to track gestational milestones, estimated due dates, and weekly baby growth — with zero ads or tracking requirements.

Evidence-Based Calculations

Our calculator uses established clinical formulas endorsed by the American College of Obstetricians and Gynecologists (ACOG) and Naegele's Rule:

  • LMP Mode: First day of last menstrual period + 280 days (with menstrual cycle length adjustments).
  • Conception Date: Exact date of ovulation/fertilization + 266 days.
  • IVF Transfer: Adjusted specifically for Day-3 (D3) and Day-5 (D5) blastocyst transfers.

Privacy by Design

Unlike many modern apps that sell maternal health data, EasyDueCalc runs 100% inside your browser. No servers receive your personal cycle dates.