Ferret

Ferret Gestation Period: Free Calculator, Chart and Key Dates

A ferret is pregnant for 42 days on average, which is 6 weeks. The normal range is 38 to 44 days. Enter the mating date in the calculator below to receive the due date, the earliest and latest kindling dates and every milestone.

42 days

Average

38–44

Normal range (days)

6–8

Kits per birth

What Is the Ferret Gestation Calculator?

The ferret gestation calculator is a free calculator that converts a mating date into a kindling date. Gestation is the time from conception to birth. A ferret carries its young for 42 days on average, and a normal pregnancy ends between day 38 and day 44. Each birth produces 6–8 kits.

The calculator returns:

Expected kindling date The most likely date, counted from your breeding date.
Earliest and latest normal dates Day 38 and day 44.
7 milestones With calendar dates, from day 12 to day 56.
Calendar file Add the dates to Google Calendar, Apple Calendar and Outlook.

Entering a target kindling date returns the matching mating date.

Example: a ferret with a mating date of 1 March 2026 is due on 12 April 2026 (day 42). The normal range runs from 8 April 2026 (day 38) to 14 April 2026 (day 44).

Problems the Ferret Gestation Calculator Solves

You do not know when the kits are due. The calculator applies the 42-day average and the 38–44 day range to your date, so you know the day to prepare and the day the kindling window opens.
You are counting days by hand. Counting 42 days across months and years causes errors. The calculator performs the date arithmetic and shows each stage on a calendar.
You need to plan ahead. Each result dates 7 milestones, starting on day 12 (ultrasound can confirm the pregnancy from about 12 to 14 days) and ending with the expected kindling on day 42.
You track more than one ferret. The herd planner lists every ferret with its date and sorts all kindling dates into one table.

How the Ferret Gestation Calculator Works

Enter the date. Use the mating date, or enter a target kindling date to work backwards.
Add your own gestation length (optional). Enter the figure your veterinarian gives you if it differs from the 42-day average.
Read the result. See the kindling date, the 38–44 day range and the milestones.
Save or share it. Add the dates to your calendar, print the chart, or copy a link that reopens the calculator with your dates.

Ferret Timeline: Key Dates

This table lists the 7 milestones the calculator dates for a ferret. Day numbers count from the mating date. The dates assume a mating date of 1 March 2026.

Ferret milestones from mating date to kindling
Day	Date	Milestone
12	13 March 2026	Ultrasound can confirm the pregnancy from about 12 to 14 days
21	22 March 2026	Move onto a high-fat, high-protein kit or breeding diet
28	29 March 2026	Weight gain becomes obvious; provide a dark, enclosed nest box
35	5 April 2026	Set up the nesting area for good — minimal disturbance from here
38	8 April 2026	Earliest normal kindling
42	12 April 2026	Expected kindling
56	26 April 2026	Kits’ eyes open around three to five weeks; start weaning food

Source: published averages, loaded into the calculator. Each animal falls anywhere inside the 38–44 day range.

Why Choose Animal Gestation Calculator for Your Ferret

A range with every date. You see day 38, day 42 and day 44, not one guess.
Your own gestation length. Enter the figure your veterinarian provides.
Dated milestones. Every milestone sits on your calendar.
Calendar export and printing. Add the dates to Google Calendar, Apple Calendar or Outlook, or print the 12-month breeding chart.
Free and private. No account is required, and your entries stay in your browser.
Published sources. Every figure comes from a published average, and every page labels it an estimate.

Who Uses the Ferret Gestation Calculator

Pet owners with a planned or unplanned litter.
Breeders tracking mating dates for each female.
Rescue volunteers and fosters preparing a home for a pregnant animal.
Veterinary students who need a gestation chart.

Gestation Calculators for Other Small Pets

Compare the ferret’s 42 days with nearby small pets: the gerbil gestation calculator (25 days), the rat gestation calculator (22 days), the mouse gestation calculator (20 days), the guinea pig gestation calculator (68 days), the hamster gestation calculator (16 days). The home page lists the gestation period of all 75 animals.

Ferret 12-Month Breeding Date Chart

Based on a 42-day gestation, using 2027 as the example year. Find the breeding date on the left and the expected kindling date on the right. A year after the date means it falls in a later year. In a leap year, dates after 29 February move by a day.

January
Bred	Due
1	Feb 12
2	Feb 13
3	Feb 14
4	Feb 15
5	Feb 16
6	Feb 17
7	Feb 18
8	Feb 19
9	Feb 20
10	Feb 21
11	Feb 22
12	Feb 23
13	Feb 24
14	Feb 25
15	Feb 26
16	Feb 27
17	Feb 28
18	Mar 1
19	Mar 2
20	Mar 3
21	Mar 4
22	Mar 5
23	Mar 6
24	Mar 7
25	Mar 8
26	Mar 9
27	Mar 10
28	Mar 11
29	Mar 12
30	Mar 13
31	Mar 14

February
Bred	Due
1	Mar 15
2	Mar 16
3	Mar 17
4	Mar 18
5	Mar 19
6	Mar 20
7	Mar 21
8	Mar 22
9	Mar 23
10	Mar 24
11	Mar 25
12	Mar 26
13	Mar 27
14	Mar 28
15	Mar 29
16	Mar 30
17	Mar 31
18	Apr 1
19	Apr 2
20	Apr 3
21	Apr 4
22	Apr 5
23	Apr 6
24	Apr 7
25	Apr 8
26	Apr 9
27	Apr 10
28	Apr 11

March
Bred	Due
1	Apr 12
2	Apr 13
3	Apr 14
4	Apr 15
5	Apr 16
6	Apr 17
7	Apr 18
8	Apr 19
9	Apr 20
10	Apr 21
11	Apr 22
12	Apr 23
13	Apr 24
14	Apr 25
15	Apr 26
16	Apr 27
17	Apr 28
18	Apr 29
19	Apr 30
20	May 1
21	May 2
22	May 3
23	May 4
24	May 5
25	May 6
26	May 7
27	May 8
28	May 9
29	May 10
30	May 11
31	May 12

April
Bred	Due
1	May 13
2	May 14
3	May 15
4	May 16
5	May 17
6	May 18
7	May 19
8	May 20
9	May 21
10	May 22
11	May 23
12	May 24
13	May 25
14	May 26
15	May 27
16	May 28
17	May 29
18	May 30
19	May 31
20	Jun 1
21	Jun 2
22	Jun 3
23	Jun 4
24	Jun 5
25	Jun 6
26	Jun 7
27	Jun 8
28	Jun 9
29	Jun 10
30	Jun 11

May
Bred	Due
1	Jun 12
2	Jun 13
3	Jun 14
4	Jun 15
5	Jun 16
6	Jun 17
7	Jun 18
8	Jun 19
9	Jun 20
10	Jun 21
11	Jun 22
12	Jun 23
13	Jun 24
14	Jun 25
15	Jun 26
16	Jun 27
17	Jun 28
18	Jun 29
19	Jun 30
20	Jul 1
21	Jul 2
22	Jul 3
23	Jul 4
24	Jul 5
25	Jul 6
26	Jul 7
27	Jul 8
28	Jul 9
29	Jul 10
30	Jul 11
31	Jul 12

June
Bred	Due
1	Jul 13
2	Jul 14
3	Jul 15
4	Jul 16
5	Jul 17
6	Jul 18
7	Jul 19
8	Jul 20
9	Jul 21
10	Jul 22
11	Jul 23
12	Jul 24
13	Jul 25
14	Jul 26
15	Jul 27
16	Jul 28
17	Jul 29
18	Jul 30
19	Jul 31
20	Aug 1
21	Aug 2
22	Aug 3
23	Aug 4
24	Aug 5
25	Aug 6
26	Aug 7
27	Aug 8
28	Aug 9
29	Aug 10
30	Aug 11

July
Bred	Due
1	Aug 12
2	Aug 13
3	Aug 14
4	Aug 15
5	Aug 16
6	Aug 17
7	Aug 18
8	Aug 19
9	Aug 20
10	Aug 21
11	Aug 22
12	Aug 23
13	Aug 24
14	Aug 25
15	Aug 26
16	Aug 27
17	Aug 28
18	Aug 29
19	Aug 30
20	Aug 31
21	Sep 1
22	Sep 2
23	Sep 3
24	Sep 4
25	Sep 5
26	Sep 6
27	Sep 7
28	Sep 8
29	Sep 9
30	Sep 10
31	Sep 11

August
Bred	Due
1	Sep 12
2	Sep 13
3	Sep 14
4	Sep 15
5	Sep 16
6	Sep 17
7	Sep 18
8	Sep 19
9	Sep 20
10	Sep 21
11	Sep 22
12	Sep 23
13	Sep 24
14	Sep 25
15	Sep 26
16	Sep 27
17	Sep 28
18	Sep 29
19	Sep 30
20	Oct 1
21	Oct 2
22	Oct 3
23	Oct 4
24	Oct 5
25	Oct 6
26	Oct 7
27	Oct 8
28	Oct 9
29	Oct 10
30	Oct 11
31	Oct 12

September
Bred	Due
1	Oct 13
2	Oct 14
3	Oct 15
4	Oct 16
5	Oct 17
6	Oct 18
7	Oct 19
8	Oct 20
9	Oct 21
10	Oct 22
11	Oct 23
12	Oct 24
13	Oct 25
14	Oct 26
15	Oct 27
16	Oct 28
17	Oct 29
18	Oct 30
19	Oct 31
20	Nov 1
21	Nov 2
22	Nov 3
23	Nov 4
24	Nov 5
25	Nov 6
26	Nov 7
27	Nov 8
28	Nov 9
29	Nov 10
30	Nov 11

October
Bred	Due
1	Nov 12
2	Nov 13
3	Nov 14
4	Nov 15
5	Nov 16
6	Nov 17
7	Nov 18
8	Nov 19
9	Nov 20
10	Nov 21
11	Nov 22
12	Nov 23
13	Nov 24
14	Nov 25
15	Nov 26
16	Nov 27
17	Nov 28
18	Nov 29
19	Nov 30
20	Dec 1
21	Dec 2
22	Dec 3
23	Dec 4
24	Dec 5
25	Dec 6
26	Dec 7
27	Dec 8
28	Dec 9
29	Dec 10
30	Dec 11
31	Dec 12

November
Bred	Due
1	Dec 13
2	Dec 14
3	Dec 15
4	Dec 16
5	Dec 17
6	Dec 18
7	Dec 19
8	Dec 20
9	Dec 21
10	Dec 22
11	Dec 23
12	Dec 24
13	Dec 25
14	Dec 26
15	Dec 27
16	Dec 28
17	Dec 29
18	Dec 30
19	Dec 31
20	Jan 1 2028
21	Jan 2 2028
22	Jan 3 2028
23	Jan 4 2028
24	Jan 5 2028
25	Jan 6 2028
26	Jan 7 2028
27	Jan 8 2028
28	Jan 9 2028
29	Jan 10 2028
30	Jan 11 2028

December
Bred	Due
1	Jan 12 2028
2	Jan 13 2028
3	Jan 14 2028
4	Jan 15 2028
5	Jan 16 2028
6	Jan 17 2028
7	Jan 18 2028
8	Jan 19 2028
9	Jan 20 2028
10	Jan 21 2028
11	Jan 22 2028
12	Jan 23 2028
13	Jan 24 2028
14	Jan 25 2028
15	Jan 26 2028
16	Jan 27 2028
17	Jan 28 2028
18	Jan 29 2028
19	Jan 30 2028
20	Jan 31 2028
21	Feb 1 2028
22	Feb 2 2028
23	Feb 3 2028
24	Feb 4 2028
25	Feb 5 2028
26	Feb 6 2028
27	Feb 7 2028
28	Feb 8 2028
29	Feb 9 2028
30	Feb 10 2028
31	Feb 11 2028

Frequently Asked Questions

How long is a ferret pregnant?

A ferret is pregnant for 42 days on average, which is 6 weeks. The normal range is 38 to 44 days. Use the ferret gestation calculator for your animal’s date.

How many days is the pregnancy of a ferret?

The average is 42 days. The shortest normal pregnancy is 38 days and the longest is 44 days, a spread of 6 days.

How do I calculate the due date?

Add 42 days to the mating date. A ferret with a mating date of 1 March 2026 is due on 12 April 2026, within a range from 8 April 2026 to 14 April 2026. The calculator does the arithmetic for any date.

How accurate is the calculator?

The calculator gives an estimate from the published average. A normal pregnancy ends between day 38 and day 44. A veterinarian can give a more precise date for your animal.

How many young does a ferret have?

Each birth produces 6–8 kits.

What are the key dates in the pregnancy?

The calculator dates 7 milestones: day 12, ultrasound can confirm the pregnancy from about 12 to 14 days; day 21, move onto a high-fat, high-protein kit or breeding diet; day 28, weight gain becomes obvious; provide a dark, enclosed nest box; day 35, set up the nesting area for good — minimal disturbance from here; day 38, earliest normal kindling; day 42, expected kindling; day 56, kits’ eyes open around three to five weeks; start weaning food. The timeline table above lists each one.

When is the expected kindling date?

The expected kindling date is day 42, which is 6 weeks after the mating date.

How does the pregnancy compare with other animals?

At 42 days the ferret carries its young shorter than a human (280 days) and shorter than a dog (63 days). The home page lists the gestation period of all 75 animals.

Is the calculator veterinary advice?

No. The calculator provides estimates for planning only. Every animal is different. Consult a qualified veterinarian about your animal’s pregnancy, health and kindling, and contact a veterinarian immediately in an emergency.

Find Your Ferret’s Due Date Now

Enter the mating date and receive the kindling date, the 38–44 day range and the milestones in seconds.

Open the free ferret gestation calculator

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Important notice: All dates and figures are estimates for planning only and are not veterinary advice. Consult a qualified veterinarian.