Home › Dog Gestation Calculator Dog Gestation Calculator Dogs whelp about 63 days after ovulation. Counted from a breeding date the window is much wider, 58 to 72 days , because sperm can wait several days for ovulation. If your vet timed ovulation with progesterone tests, choose “From ovulation date” for a tighter window.
How the calculator works It adds the gestation length to the date you enter, counting calendar days (including leap days). The default for dog is 63 days, and the result also shows a window of 58 to 72 days (normal range). 58 to 72 days from breeding when the stage of heat is unknown; 62 to 64 days from the day of ovulation. Change the length if your vet, breed society or sire information says otherwise. All calculations run in your browser; nothing you enter is sent anywhere.
Worked examples A bitch bred on June 1, 2027, could whelp anywhere from July 29 to August 12, most likely around August 3 . Dog gestation facts From breeding 58 to 72 days From ovulation 62 to 64 days
Common questions Why is the window from breeding so wide? The Merck Veterinary Manual gives 58 to 72 days from breeding when the stage of heat is unknown, but 62 to 64 days from the day of ovulation.
Printable dog gestation chart Show the full whelping table for every breeding date of the year Breeding year 2025 2026 2027 2028 Gestation length From breeding date (63 days, window 58 to 72) From ovulation date (63 days, window 62 to 64) Print this table
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Dog, 63-day gestation. Find the date the bitch was bred in the left column; the expected whelping date is on the right.
Bred in January 2026 Bred Due Jan 1 Mar 5 Jan 2 Mar 6 Jan 3 Mar 7 Jan 4 Mar 8 Jan 5 Mar 9 Jan 6 Mar 10 Jan 7 Mar 11 Jan 8 Mar 12 Jan 9 Mar 13 Jan 10 Mar 14 Jan 11 Mar 15 Jan 12 Mar 16 Jan 13 Mar 17 Jan 14 Mar 18 Jan 15 Mar 19 Jan 16 Mar 20 Jan 17 Mar 21 Jan 18 Mar 22 Jan 19 Mar 23 Jan 20 Mar 24 Jan 21 Mar 25 Jan 22 Mar 26 Jan 23 Mar 27 Jan 24 Mar 28 Jan 25 Mar 29 Jan 26 Mar 30 Jan 27 Mar 31 Jan 28 Apr 1 Jan 29 Apr 2 Jan 30 Apr 3 Jan 31 Apr 4
Bred in February 2026 Bred Due Feb 1 Apr 5 Feb 2 Apr 6 Feb 3 Apr 7 Feb 4 Apr 8 Feb 5 Apr 9 Feb 6 Apr 10 Feb 7 Apr 11 Feb 8 Apr 12 Feb 9 Apr 13 Feb 10 Apr 14 Feb 11 Apr 15 Feb 12 Apr 16 Feb 13 Apr 17 Feb 14 Apr 18 Feb 15 Apr 19 Feb 16 Apr 20 Feb 17 Apr 21 Feb 18 Apr 22 Feb 19 Apr 23 Feb 20 Apr 24 Feb 21 Apr 25 Feb 22 Apr 26 Feb 23 Apr 27 Feb 24 Apr 28 Feb 25 Apr 29 Feb 26 Apr 30 Feb 27 May 1 Feb 28 May 2
Bred in March 2026 Bred Due Mar 1 May 3 Mar 2 May 4 Mar 3 May 5 Mar 4 May 6 Mar 5 May 7 Mar 6 May 8 Mar 7 May 9 Mar 8 May 10 Mar 9 May 11 Mar 10 May 12 Mar 11 May 13 Mar 12 May 14 Mar 13 May 15 Mar 14 May 16 Mar 15 May 17 Mar 16 May 18 Mar 17 May 19 Mar 18 May 20 Mar 19 May 21 Mar 20 May 22 Mar 21 May 23 Mar 22 May 24 Mar 23 May 25 Mar 24 May 26 Mar 25 May 27 Mar 26 May 28 Mar 27 May 29 Mar 28 May 30 Mar 29 May 31 Mar 30 Jun 1 Mar 31 Jun 2
Bred in April 2026 Bred Due Apr 1 Jun 3 Apr 2 Jun 4 Apr 3 Jun 5 Apr 4 Jun 6 Apr 5 Jun 7 Apr 6 Jun 8 Apr 7 Jun 9 Apr 8 Jun 10 Apr 9 Jun 11 Apr 10 Jun 12 Apr 11 Jun 13 Apr 12 Jun 14 Apr 13 Jun 15 Apr 14 Jun 16 Apr 15 Jun 17 Apr 16 Jun 18 Apr 17 Jun 19 Apr 18 Jun 20 Apr 19 Jun 21 Apr 20 Jun 22 Apr 21 Jun 23 Apr 22 Jun 24 Apr 23 Jun 25 Apr 24 Jun 26 Apr 25 Jun 27 Apr 26 Jun 28 Apr 27 Jun 29 Apr 28 Jun 30 Apr 29 Jul 1 Apr 30 Jul 2
Bred in May 2026 Bred Due May 1 Jul 3 May 2 Jul 4 May 3 Jul 5 May 4 Jul 6 May 5 Jul 7 May 6 Jul 8 May 7 Jul 9 May 8 Jul 10 May 9 Jul 11 May 10 Jul 12 May 11 Jul 13 May 12 Jul 14 May 13 Jul 15 May 14 Jul 16 May 15 Jul 17 May 16 Jul 18 May 17 Jul 19 May 18 Jul 20 May 19 Jul 21 May 20 Jul 22 May 21 Jul 23 May 22 Jul 24 May 23 Jul 25 May 24 Jul 26 May 25 Jul 27 May 26 Jul 28 May 27 Jul 29 May 28 Jul 30 May 29 Jul 31 May 30 Aug 1 May 31 Aug 2
Bred in June 2026 Bred Due Jun 1 Aug 3 Jun 2 Aug 4 Jun 3 Aug 5 Jun 4 Aug 6 Jun 5 Aug 7 Jun 6 Aug 8 Jun 7 Aug 9 Jun 8 Aug 10 Jun 9 Aug 11 Jun 10 Aug 12 Jun 11 Aug 13 Jun 12 Aug 14 Jun 13 Aug 15 Jun 14 Aug 16 Jun 15 Aug 17 Jun 16 Aug 18 Jun 17 Aug 19 Jun 18 Aug 20 Jun 19 Aug 21 Jun 20 Aug 22 Jun 21 Aug 23 Jun 22 Aug 24 Jun 23 Aug 25 Jun 24 Aug 26 Jun 25 Aug 27 Jun 26 Aug 28 Jun 27 Aug 29 Jun 28 Aug 30 Jun 29 Aug 31 Jun 30 Sep 1
Bred in July 2026 Bred Due Jul 1 Sep 2 Jul 2 Sep 3 Jul 3 Sep 4 Jul 4 Sep 5 Jul 5 Sep 6 Jul 6 Sep 7 Jul 7 Sep 8 Jul 8 Sep 9 Jul 9 Sep 10 Jul 10 Sep 11 Jul 11 Sep 12 Jul 12 Sep 13 Jul 13 Sep 14 Jul 14 Sep 15 Jul 15 Sep 16 Jul 16 Sep 17 Jul 17 Sep 18 Jul 18 Sep 19 Jul 19 Sep 20 Jul 20 Sep 21 Jul 21 Sep 22 Jul 22 Sep 23 Jul 23 Sep 24 Jul 24 Sep 25 Jul 25 Sep 26 Jul 26 Sep 27 Jul 27 Sep 28 Jul 28 Sep 29 Jul 29 Sep 30 Jul 30 Oct 1 Jul 31 Oct 2
Bred in August 2026 Bred Due Aug 1 Oct 3 Aug 2 Oct 4 Aug 3 Oct 5 Aug 4 Oct 6 Aug 5 Oct 7 Aug 6 Oct 8 Aug 7 Oct 9 Aug 8 Oct 10 Aug 9 Oct 11 Aug 10 Oct 12 Aug 11 Oct 13 Aug 12 Oct 14 Aug 13 Oct 15 Aug 14 Oct 16 Aug 15 Oct 17 Aug 16 Oct 18 Aug 17 Oct 19 Aug 18 Oct 20 Aug 19 Oct 21 Aug 20 Oct 22 Aug 21 Oct 23 Aug 22 Oct 24 Aug 23 Oct 25 Aug 24 Oct 26 Aug 25 Oct 27 Aug 26 Oct 28 Aug 27 Oct 29 Aug 28 Oct 30 Aug 29 Oct 31 Aug 30 Nov 1 Aug 31 Nov 2
Bred in September 2026 Bred Due Sep 1 Nov 3 Sep 2 Nov 4 Sep 3 Nov 5 Sep 4 Nov 6 Sep 5 Nov 7 Sep 6 Nov 8 Sep 7 Nov 9 Sep 8 Nov 10 Sep 9 Nov 11 Sep 10 Nov 12 Sep 11 Nov 13 Sep 12 Nov 14 Sep 13 Nov 15 Sep 14 Nov 16 Sep 15 Nov 17 Sep 16 Nov 18 Sep 17 Nov 19 Sep 18 Nov 20 Sep 19 Nov 21 Sep 20 Nov 22 Sep 21 Nov 23 Sep 22 Nov 24 Sep 23 Nov 25 Sep 24 Nov 26 Sep 25 Nov 27 Sep 26 Nov 28 Sep 27 Nov 29 Sep 28 Nov 30 Sep 29 Dec 1 Sep 30 Dec 2
Bred in October 2026 Bred Due Oct 1 Dec 3 Oct 2 Dec 4 Oct 3 Dec 5 Oct 4 Dec 6 Oct 5 Dec 7 Oct 6 Dec 8 Oct 7 Dec 9 Oct 8 Dec 10 Oct 9 Dec 11 Oct 10 Dec 12 Oct 11 Dec 13 Oct 12 Dec 14 Oct 13 Dec 15 Oct 14 Dec 16 Oct 15 Dec 17 Oct 16 Dec 18 Oct 17 Dec 19 Oct 18 Dec 20 Oct 19 Dec 21 Oct 20 Dec 22 Oct 21 Dec 23 Oct 22 Dec 24 Oct 23 Dec 25 Oct 24 Dec 26 Oct 25 Dec 27 Oct 26 Dec 28 Oct 27 Dec 29 Oct 28 Dec 30 Oct 29 Dec 31 Oct 30 Jan 1, 2027 Oct 31 Jan 2, 2027
Bred in November 2026 Bred Due Nov 1 Jan 3, 2027 Nov 2 Jan 4, 2027 Nov 3 Jan 5, 2027 Nov 4 Jan 6, 2027 Nov 5 Jan 7, 2027 Nov 6 Jan 8, 2027 Nov 7 Jan 9, 2027 Nov 8 Jan 10, 2027 Nov 9 Jan 11, 2027 Nov 10 Jan 12, 2027 Nov 11 Jan 13, 2027 Nov 12 Jan 14, 2027 Nov 13 Jan 15, 2027 Nov 14 Jan 16, 2027 Nov 15 Jan 17, 2027 Nov 16 Jan 18, 2027 Nov 17 Jan 19, 2027 Nov 18 Jan 20, 2027 Nov 19 Jan 21, 2027 Nov 20 Jan 22, 2027 Nov 21 Jan 23, 2027 Nov 22 Jan 24, 2027 Nov 23 Jan 25, 2027 Nov 24 Jan 26, 2027 Nov 25 Jan 27, 2027 Nov 26 Jan 28, 2027 Nov 27 Jan 29, 2027 Nov 28 Jan 30, 2027 Nov 29 Jan 31, 2027 Nov 30 Feb 1, 2027
Bred in December 2026 Bred Due Dec 1 Feb 2, 2027 Dec 2 Feb 3, 2027 Dec 3 Feb 4, 2027 Dec 4 Feb 5, 2027 Dec 5 Feb 6, 2027 Dec 6 Feb 7, 2027 Dec 7 Feb 8, 2027 Dec 8 Feb 9, 2027 Dec 9 Feb 10, 2027 Dec 10 Feb 11, 2027 Dec 11 Feb 12, 2027 Dec 12 Feb 13, 2027 Dec 13 Feb 14, 2027 Dec 14 Feb 15, 2027 Dec 15 Feb 16, 2027 Dec 16 Feb 17, 2027 Dec 17 Feb 18, 2027 Dec 18 Feb 19, 2027 Dec 19 Feb 20, 2027 Dec 20 Feb 21, 2027 Dec 21 Feb 22, 2027 Dec 22 Feb 23, 2027 Dec 23 Feb 24, 2027 Dec 24 Feb 25, 2027 Dec 25 Feb 26, 2027 Dec 26 Feb 27, 2027 Dec 27 Feb 28, 2027 Dec 28 Mar 1, 2027 Dec 29 Mar 2, 2027 Dec 30 Mar 3, 2027 Dec 31 Mar 4, 2027
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Last reviewed 2026-10-21. Planning tool only. Confirm pregnancies and due dates with your veterinarian. See methodology .