🐄 Cattle Gestation Calculator
Gestation Period for Cows Calculator
Enter your breeding date to predict calving date, dry-off milestone, and full pregnancy timeline for beef and dairy cattle.
🐄 Calving Date Calculator
Select Breed (or enter custom days)
283Holstein/Friesian
285Angus
286Hereford
288Simmental
290Charolais
✎Custom
Cattle Gestation Reference
The average gestation period for cattle is 283 days (approximately 9 months and 9 days), but this varies significantly by breed, individual cow, calf sex, and nutrition. Beef breeds typically carry calves 1–5 days longer than dairy breeds. Bull calves are also typically carried 1–2 days longer than heifer calves.
| Breed | Avg Gestation | Range | Type |
|---|---|---|---|
| Holstein/Friesian | 283 days | 278–290 | Dairy |
| Jersey | 278 days | 273–285 | Dairy |
| Angus | 285 days | 279–292 | Beef |
| Hereford | 286 days | 280–295 | Beef |
| Simmental | 288 days | 282–296 | Dual |
| Charolais | 290 days | 284–298 | Beef |
| Limousin | 289 days | 283–296 | Beef |
🐄 Dry-Off Tip: Dairy cows should be dried off approximately 60 days before expected calving to allow udder involution and proper colostrum development. The calving date calculator includes this milestone automatically.
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Frequently Asked Questions
The average gestation period for cattle is 283 days (about 9 months and 9 days), ranging from 278–295 days depending on breed. Dairy breeds like Jersey average 278 days while large beef breeds like Charolais average up to 290 days. Individual variation of ±7 days is normal even within a breed.
Signs of impending calving include: udder filling with colostrum (bagging up) 2–4 weeks before, relaxation of the tailhead ligaments 24–48 hours before, vulval swelling and discharge, restlessness, separating from the herd, and loss of appetite. Most calvings occur at night when temperatures are cooler.
Pregnancy confirmation can be done by rectal palpation as early as 35–45 days post-breeding or by ultrasound at 25–30 days. Blood or milk progesterone testing can detect pregnancy as early as 21–24 days. Most operations confirm pregnancy at 60–90 days post-breeding to allow timely decisions about open cows.