Calving Date Calculator – Predict Due Date, Dry-Off & Colostrum Window

Gestation Calculator

Select your breed and enter the insemination or breeding date to calculate key dates, vaccination schedules, and calving windows.

Breed / Animal Type

Custom Gestation (days)

Insemination / Breeding Date

Expected Calving Date —

Earliest Expected (−7 days) —

Latest Expected (+7 days) —

Dry-Off Date —

Colostrum Window —

Pregnancy Check —