Cow Gestation Calculator
Calculate the expected calving date based on the breeding date. Average bovine gestation is 283 days.
Formula
Due Date = Breeding Date + gestation days
- Average bovine gestation: 283 days (range 270–295).
- Holstein and other dairy breeds average ~279 days; Beef breeds ~283 days.
- Gestation can vary by bull genetics.
Bred on January 1
Inputs
- Breeding Date: 2025-01-01
- Gestation Period: 283 days
January 1 + 283 days = October 11, 2025.
Frequently asked questions
How long is a cow's gestation?
On average 283 days (~9.5 months), ranging from 270 to 295 days.
Does breed affect gestation length?
Yes. Dairy breeds tend to be slightly shorter; some beef breeds slightly longer.