Livestock Gestation Calculator
Breeding date in → due date out. Breed-adjusted for cattle. Free, no signup, works offline.
Advanced: custom gestation length
Expected calving
Management timeline
Typical windows for planning only — health and vaccination decisions belong to you and your veterinarian.
Keep your whole calving book on your phone
Animal records, breeding → preg-check → calving tracking, weaning weights, treatment log with withdrawal dates, and CSV export for the sale barn. Free for up to 5 animals. HerdFlo Pro is unlimited — $5.99/month or $39.99/year.
Prefer an email when new features land?
My Herd
Your animals, breedings, weights, and treatments. Free for up to 5 animals — no card required.