A cow pregnancy lasts about 283 days, counted from the breeding date; most births fall between day 279 and day 287. Pick the breeding date below to see the due date, the usual window and the milestones on the way.
Bred on
Length (days)
283
Average: 283 days. Adjust it for your breed.
Due date
Thu, Dec 9, 2027
Usually Dec 5 – Dec 13, 2027
Milestones
💕
Bred
Day 0 · Mon, Mar 1, 2027
⏳
Halfway
Day 141 · Tue, Jul 20, 2027
🧺
About a week to go: get a clean, quiet birthing area ready
Day 276 · Thu, Dec 2, 2027
🎉
Due date (calving)
Day 283 · Thu, Dec 9, 2027
How the date is worked out
Due date = breeding date + 283 days. Day 0 is the day of breeding, so a cow bred on Mar 1, 2027 is due on Dec 9, 2027, and births usually fall between Dec 5, 2027 and Dec 13, 2027. If the cow was bred on several days, count from the first breeding and expect the window to run to the last breeding + 287 days.
Good to know
Breeds differ by several days, and cows carrying bull calves tend to calve a little later than those carrying heifer calves (University of Nebraska–Lincoln).
2027 gestation table: breeding date and due date
Every breeding date of 2027 with its due date (283 days later), month by month. Print it for the barn or kennel wall.
January 2027
Bred
Due
Jan 1
Oct 11, 2027
Jan 2
Oct 12, 2027
Jan 3
Oct 13, 2027
Jan 4
Oct 14, 2027
Jan 5
Oct 15, 2027
Jan 6
Oct 16, 2027
Jan 7
Oct 17, 2027
Jan 8
Oct 18, 2027
Jan 9
Oct 19, 2027
Jan 10
Oct 20, 2027
Jan 11
Oct 21, 2027
Jan 12
Oct 22, 2027
Jan 13
Oct 23, 2027
Jan 14
Oct 24, 2027
Jan 15
Oct 25, 2027
Jan 16
Oct 26, 2027
Jan 17
Oct 27, 2027
Jan 18
Oct 28, 2027
Jan 19
Oct 29, 2027
Jan 20
Oct 30, 2027
Jan 21
Oct 31, 2027
Jan 22
Nov 1, 2027
Jan 23
Nov 2, 2027
Jan 24
Nov 3, 2027
Jan 25
Nov 4, 2027
Jan 26
Nov 5, 2027
Jan 27
Nov 6, 2027
Jan 28
Nov 7, 2027
Jan 29
Nov 8, 2027
Jan 30
Nov 9, 2027
Jan 31
Nov 10, 2027
February 2027
Bred
Due
Feb 1
Nov 11, 2027
Feb 2
Nov 12, 2027
Feb 3
Nov 13, 2027
Feb 4
Nov 14, 2027
Feb 5
Nov 15, 2027
Feb 6
Nov 16, 2027
Feb 7
Nov 17, 2027
Feb 8
Nov 18, 2027
Feb 9
Nov 19, 2027
Feb 10
Nov 20, 2027
Feb 11
Nov 21, 2027
Feb 12
Nov 22, 2027
Feb 13
Nov 23, 2027
Feb 14
Nov 24, 2027
Feb 15
Nov 25, 2027
Feb 16
Nov 26, 2027
Feb 17
Nov 27, 2027
Feb 18
Nov 28, 2027
Feb 19
Nov 29, 2027
Feb 20
Nov 30, 2027
Feb 21
Dec 1, 2027
Feb 22
Dec 2, 2027
Feb 23
Dec 3, 2027
Feb 24
Dec 4, 2027
Feb 25
Dec 5, 2027
Feb 26
Dec 6, 2027
Feb 27
Dec 7, 2027
Feb 28
Dec 8, 2027
March 2027
Bred
Due
Mar 1
Dec 9, 2027
Mar 2
Dec 10, 2027
Mar 3
Dec 11, 2027
Mar 4
Dec 12, 2027
Mar 5
Dec 13, 2027
Mar 6
Dec 14, 2027
Mar 7
Dec 15, 2027
Mar 8
Dec 16, 2027
Mar 9
Dec 17, 2027
Mar 10
Dec 18, 2027
Mar 11
Dec 19, 2027
Mar 12
Dec 20, 2027
Mar 13
Dec 21, 2027
Mar 14
Dec 22, 2027
Mar 15
Dec 23, 2027
Mar 16
Dec 24, 2027
Mar 17
Dec 25, 2027
Mar 18
Dec 26, 2027
Mar 19
Dec 27, 2027
Mar 20
Dec 28, 2027
Mar 21
Dec 29, 2027
Mar 22
Dec 30, 2027
Mar 23
Dec 31, 2027
Mar 24
Jan 1, 2028
Mar 25
Jan 2, 2028
Mar 26
Jan 3, 2028
Mar 27
Jan 4, 2028
Mar 28
Jan 5, 2028
Mar 29
Jan 6, 2028
Mar 30
Jan 7, 2028
Mar 31
Jan 8, 2028
April 2027
Bred
Due
Apr 1
Jan 9, 2028
Apr 2
Jan 10, 2028
Apr 3
Jan 11, 2028
Apr 4
Jan 12, 2028
Apr 5
Jan 13, 2028
Apr 6
Jan 14, 2028
Apr 7
Jan 15, 2028
Apr 8
Jan 16, 2028
Apr 9
Jan 17, 2028
Apr 10
Jan 18, 2028
Apr 11
Jan 19, 2028
Apr 12
Jan 20, 2028
Apr 13
Jan 21, 2028
Apr 14
Jan 22, 2028
Apr 15
Jan 23, 2028
Apr 16
Jan 24, 2028
Apr 17
Jan 25, 2028
Apr 18
Jan 26, 2028
Apr 19
Jan 27, 2028
Apr 20
Jan 28, 2028
Apr 21
Jan 29, 2028
Apr 22
Jan 30, 2028
Apr 23
Jan 31, 2028
Apr 24
Feb 1, 2028
Apr 25
Feb 2, 2028
Apr 26
Feb 3, 2028
Apr 27
Feb 4, 2028
Apr 28
Feb 5, 2028
Apr 29
Feb 6, 2028
Apr 30
Feb 7, 2028
May 2027
Bred
Due
May 1
Feb 8, 2028
May 2
Feb 9, 2028
May 3
Feb 10, 2028
May 4
Feb 11, 2028
May 5
Feb 12, 2028
May 6
Feb 13, 2028
May 7
Feb 14, 2028
May 8
Feb 15, 2028
May 9
Feb 16, 2028
May 10
Feb 17, 2028
May 11
Feb 18, 2028
May 12
Feb 19, 2028
May 13
Feb 20, 2028
May 14
Feb 21, 2028
May 15
Feb 22, 2028
May 16
Feb 23, 2028
May 17
Feb 24, 2028
May 18
Feb 25, 2028
May 19
Feb 26, 2028
May 20
Feb 27, 2028
May 21
Feb 28, 2028
May 22
Feb 29, 2028
May 23
Mar 1, 2028
May 24
Mar 2, 2028
May 25
Mar 3, 2028
May 26
Mar 4, 2028
May 27
Mar 5, 2028
May 28
Mar 6, 2028
May 29
Mar 7, 2028
May 30
Mar 8, 2028
May 31
Mar 9, 2028
June 2027
Bred
Due
Jun 1
Mar 10, 2028
Jun 2
Mar 11, 2028
Jun 3
Mar 12, 2028
Jun 4
Mar 13, 2028
Jun 5
Mar 14, 2028
Jun 6
Mar 15, 2028
Jun 7
Mar 16, 2028
Jun 8
Mar 17, 2028
Jun 9
Mar 18, 2028
Jun 10
Mar 19, 2028
Jun 11
Mar 20, 2028
Jun 12
Mar 21, 2028
Jun 13
Mar 22, 2028
Jun 14
Mar 23, 2028
Jun 15
Mar 24, 2028
Jun 16
Mar 25, 2028
Jun 17
Mar 26, 2028
Jun 18
Mar 27, 2028
Jun 19
Mar 28, 2028
Jun 20
Mar 29, 2028
Jun 21
Mar 30, 2028
Jun 22
Mar 31, 2028
Jun 23
Apr 1, 2028
Jun 24
Apr 2, 2028
Jun 25
Apr 3, 2028
Jun 26
Apr 4, 2028
Jun 27
Apr 5, 2028
Jun 28
Apr 6, 2028
Jun 29
Apr 7, 2028
Jun 30
Apr 8, 2028
July 2027
Bred
Due
Jul 1
Apr 9, 2028
Jul 2
Apr 10, 2028
Jul 3
Apr 11, 2028
Jul 4
Apr 12, 2028
Jul 5
Apr 13, 2028
Jul 6
Apr 14, 2028
Jul 7
Apr 15, 2028
Jul 8
Apr 16, 2028
Jul 9
Apr 17, 2028
Jul 10
Apr 18, 2028
Jul 11
Apr 19, 2028
Jul 12
Apr 20, 2028
Jul 13
Apr 21, 2028
Jul 14
Apr 22, 2028
Jul 15
Apr 23, 2028
Jul 16
Apr 24, 2028
Jul 17
Apr 25, 2028
Jul 18
Apr 26, 2028
Jul 19
Apr 27, 2028
Jul 20
Apr 28, 2028
Jul 21
Apr 29, 2028
Jul 22
Apr 30, 2028
Jul 23
May 1, 2028
Jul 24
May 2, 2028
Jul 25
May 3, 2028
Jul 26
May 4, 2028
Jul 27
May 5, 2028
Jul 28
May 6, 2028
Jul 29
May 7, 2028
Jul 30
May 8, 2028
Jul 31
May 9, 2028
August 2027
Bred
Due
Aug 1
May 10, 2028
Aug 2
May 11, 2028
Aug 3
May 12, 2028
Aug 4
May 13, 2028
Aug 5
May 14, 2028
Aug 6
May 15, 2028
Aug 7
May 16, 2028
Aug 8
May 17, 2028
Aug 9
May 18, 2028
Aug 10
May 19, 2028
Aug 11
May 20, 2028
Aug 12
May 21, 2028
Aug 13
May 22, 2028
Aug 14
May 23, 2028
Aug 15
May 24, 2028
Aug 16
May 25, 2028
Aug 17
May 26, 2028
Aug 18
May 27, 2028
Aug 19
May 28, 2028
Aug 20
May 29, 2028
Aug 21
May 30, 2028
Aug 22
May 31, 2028
Aug 23
Jun 1, 2028
Aug 24
Jun 2, 2028
Aug 25
Jun 3, 2028
Aug 26
Jun 4, 2028
Aug 27
Jun 5, 2028
Aug 28
Jun 6, 2028
Aug 29
Jun 7, 2028
Aug 30
Jun 8, 2028
Aug 31
Jun 9, 2028
September 2027
Bred
Due
Sep 1
Jun 10, 2028
Sep 2
Jun 11, 2028
Sep 3
Jun 12, 2028
Sep 4
Jun 13, 2028
Sep 5
Jun 14, 2028
Sep 6
Jun 15, 2028
Sep 7
Jun 16, 2028
Sep 8
Jun 17, 2028
Sep 9
Jun 18, 2028
Sep 10
Jun 19, 2028
Sep 11
Jun 20, 2028
Sep 12
Jun 21, 2028
Sep 13
Jun 22, 2028
Sep 14
Jun 23, 2028
Sep 15
Jun 24, 2028
Sep 16
Jun 25, 2028
Sep 17
Jun 26, 2028
Sep 18
Jun 27, 2028
Sep 19
Jun 28, 2028
Sep 20
Jun 29, 2028
Sep 21
Jun 30, 2028
Sep 22
Jul 1, 2028
Sep 23
Jul 2, 2028
Sep 24
Jul 3, 2028
Sep 25
Jul 4, 2028
Sep 26
Jul 5, 2028
Sep 27
Jul 6, 2028
Sep 28
Jul 7, 2028
Sep 29
Jul 8, 2028
Sep 30
Jul 9, 2028
October 2027
Bred
Due
Oct 1
Jul 10, 2028
Oct 2
Jul 11, 2028
Oct 3
Jul 12, 2028
Oct 4
Jul 13, 2028
Oct 5
Jul 14, 2028
Oct 6
Jul 15, 2028
Oct 7
Jul 16, 2028
Oct 8
Jul 17, 2028
Oct 9
Jul 18, 2028
Oct 10
Jul 19, 2028
Oct 11
Jul 20, 2028
Oct 12
Jul 21, 2028
Oct 13
Jul 22, 2028
Oct 14
Jul 23, 2028
Oct 15
Jul 24, 2028
Oct 16
Jul 25, 2028
Oct 17
Jul 26, 2028
Oct 18
Jul 27, 2028
Oct 19
Jul 28, 2028
Oct 20
Jul 29, 2028
Oct 21
Jul 30, 2028
Oct 22
Jul 31, 2028
Oct 23
Aug 1, 2028
Oct 24
Aug 2, 2028
Oct 25
Aug 3, 2028
Oct 26
Aug 4, 2028
Oct 27
Aug 5, 2028
Oct 28
Aug 6, 2028
Oct 29
Aug 7, 2028
Oct 30
Aug 8, 2028
Oct 31
Aug 9, 2028
November 2027
Bred
Due
Nov 1
Aug 10, 2028
Nov 2
Aug 11, 2028
Nov 3
Aug 12, 2028
Nov 4
Aug 13, 2028
Nov 5
Aug 14, 2028
Nov 6
Aug 15, 2028
Nov 7
Aug 16, 2028
Nov 8
Aug 17, 2028
Nov 9
Aug 18, 2028
Nov 10
Aug 19, 2028
Nov 11
Aug 20, 2028
Nov 12
Aug 21, 2028
Nov 13
Aug 22, 2028
Nov 14
Aug 23, 2028
Nov 15
Aug 24, 2028
Nov 16
Aug 25, 2028
Nov 17
Aug 26, 2028
Nov 18
Aug 27, 2028
Nov 19
Aug 28, 2028
Nov 20
Aug 29, 2028
Nov 21
Aug 30, 2028
Nov 22
Aug 31, 2028
Nov 23
Sep 1, 2028
Nov 24
Sep 2, 2028
Nov 25
Sep 3, 2028
Nov 26
Sep 4, 2028
Nov 27
Sep 5, 2028
Nov 28
Sep 6, 2028
Nov 29
Sep 7, 2028
Nov 30
Sep 8, 2028
December 2027
Bred
Due
Dec 1
Sep 9, 2028
Dec 2
Sep 10, 2028
Dec 3
Sep 11, 2028
Dec 4
Sep 12, 2028
Dec 5
Sep 13, 2028
Dec 6
Sep 14, 2028
Dec 7
Sep 15, 2028
Dec 8
Sep 16, 2028
Dec 9
Sep 17, 2028
Dec 10
Sep 18, 2028
Dec 11
Sep 19, 2028
Dec 12
Sep 20, 2028
Dec 13
Sep 21, 2028
Dec 14
Sep 22, 2028
Dec 15
Sep 23, 2028
Dec 16
Sep 24, 2028
Dec 17
Sep 25, 2028
Dec 18
Sep 26, 2028
Dec 19
Sep 27, 2028
Dec 20
Sep 28, 2028
Dec 21
Sep 29, 2028
Dec 22
Sep 30, 2028
Dec 23
Oct 1, 2028
Dec 24
Oct 2, 2028
Dec 25
Oct 3, 2028
Dec 26
Oct 4, 2028
Dec 27
Oct 5, 2028
Dec 28
Oct 6, 2028
Dec 29
Oct 7, 2028
Dec 30
Oct 8, 2028
Dec 31
Oct 9, 2028
Frequently asked questions
How long is a cow pregnant?
About 283 days on average, counted from the breeding date; most births fall between day 279 and day 287.
How do I calculate a cow due date?
Add 283 days to the breeding date. Example: bred on Mar 1, 2027, due on Dec 9, 2027. The calculator above does it for any date and lists the milestones.
What if the cow goes past the due date?
Most births fall by day 287 after breeding. If that day passes, or anything about the mother worries you, call your veterinarian.
Can I use a different length for my breed?
Yes. Change the length (in days) in the calculator; the date, the window and the milestones move with it. The Android app keeps the length for each animal or batch you save.
Where the numbers come from
Sources: University of Nebraska–Lincoln Beef: Pregnant cows. Breeds and individual animals differ; change the length in the calculator if yours usually runs early or late. These dates are estimates, not veterinary advice: ask your veterinarian about your animal.