About DueDateCalculator.com
Free, medically accurate pregnancy due date tools — built for every expecting parent.
Our Mission
At DueDateCalculator.com, we believe every expecting parent deserves access to clear, accurate, and free pregnancy tools — without ads cluttering the page or paywalls blocking the answers. Our calculators use the same medically validated formulas that OB-GYNs and midwives use: Naegele’s Rule, IVF embryo transfer dating, ultrasound gestational age, and more.
We also cover animal pregnancies — because farmers, breeders, and pet owners deserve the same quality of information as human parents.
Our Team
Our content is written by trained health writers and medically reviewed by licensed clinicians before it is published.
Ashok researches and writes all pregnancy content using peer-reviewed sources and clinical guidelines.
View profile →Dr. Basnet is a licensed obstetrician-gynecologist who reviews all human pregnancy content for clinical accuracy.
View profile →Dr. Yadav holds a Doctor of Veterinary Medicine degree and reviews all animal pregnancy calculator content.
View profile →What We Cover
Editorial Standards
Every page on DueDateCalculator.com is researched using peer-reviewed journals, clinical guidelines from ACOG, WHO, and ASRM, and current obstetric practice standards. Medical claims are reviewed by a licensed clinician before publication. We update content whenever guidelines change.
Read our full review process →