Chinchilla

Chinchilla Gestation Period: Free Calculator, Chart and Key Dates

A chinchilla is pregnant for 111 days on average, which is 15 weeks and 6 days. The normal range is 105 to 118 days. Enter the mating date in the calculator below to receive the due date, the earliest and latest birthing dates and every milestone.

111 days

Average

105–118

Normal range (days)

1–3

Kits per birth

What Is the Chinchilla Gestation Calculator?

The chinchilla gestation calculator is a free calculator that converts a mating date into a birthing date. Gestation is the time from conception to birth. A chinchilla carries its young for 111 days on average, and a normal pregnancy ends between day 105 and day 118. Each birth produces 1–3 kits.

The calculator returns:

Expected birthing date The most likely date, counted from your breeding date.
Earliest and latest normal dates Day 105 and day 118.
7 milestones With calendar dates, from day 30 to day 118.
Calendar file Add the dates to Google Calendar, Apple Calendar and Outlook.

Entering a target birthing date returns the matching mating date.

Example: a chinchilla with a mating date of 1 March 2026 is due on 20 June 2026 (day 111). The normal range runs from 14 June 2026 (day 105) to 27 June 2026 (day 118).

Problems the Chinchilla Gestation Calculator Solves

You do not know when the kits are due. The calculator applies the 111-day average and the 105–118 day range to your date, so you know the day to prepare and the day the birthing window opens.
You are counting days by hand. Counting 111 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 30 (weight gain begins to show on weekly weigh-ins) and ending with the expected birthing on day 111.
You track more than one chinchilla. The herd planner lists every chinchilla with its date and sorts all birthing dates into one table.

How the Chinchilla Gestation Calculator Works

Enter the date. Use the mating date, or enter a target birthing date to work backwards.
Add your own gestation length (optional). Enter the figure your veterinarian gives you if it differs from the 111-day average.
Read the result. See the birthing date, the 105–118 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.

Chinchilla Timeline: Key Dates

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

Chinchilla milestones from mating date to birthing
Day	Date	Milestone
30	31 March 2026	Weight gain begins to show on weekly weigh-ins
60	30 April 2026	Ultrasound or palpation confirms the pregnancy; kits are often twins
90	30 May 2026	Remove the wheel and high shelves; add a low, safe nest box
100	9 June 2026	Increase alfalfa and keep calcium adequate; limit handling
105	14 June 2026	Earliest normal birth — check the cage each morning
111	20 June 2026	Expected birth
118	27 June 2026	Latest normal birth — see a vet if she is past this

Source: published averages, loaded into the calculator. Each animal falls anywhere inside the 105–118 day range.

Why Choose Animal Gestation Calculator for Your Chinchilla

A range with every date. You see day 105, day 111 and day 118, 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 Chinchilla 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 chinchilla’s 111 days with nearby small pets: the guinea pig gestation calculator (68 days), the ferret gestation calculator (42 days), the gerbil gestation calculator (25 days), the rat gestation calculator (22 days), the mouse gestation calculator (20 days). The home page lists the gestation period of all 75 animals.

Chinchilla 12-Month Breeding Date Chart

Based on a 111-day gestation, using 2027 as the example year. Find the breeding date on the left and the expected birthing 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	Apr 22
2	Apr 23
3	Apr 24
4	Apr 25
5	Apr 26
6	Apr 27
7	Apr 28
8	Apr 29
9	Apr 30
10	May 1
11	May 2
12	May 3
13	May 4
14	May 5
15	May 6
16	May 7
17	May 8
18	May 9
19	May 10
20	May 11
21	May 12
22	May 13
23	May 14
24	May 15
25	May 16
26	May 17
27	May 18
28	May 19
29	May 20
30	May 21
31	May 22

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

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

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

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

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

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

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

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

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

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

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

Frequently Asked Questions

How long is a chinchilla pregnant?

A chinchilla is pregnant for 111 days on average, which is 15 weeks and 6 days. The normal range is 105 to 118 days. Use the chinchilla gestation calculator for your animal’s date.

How many days is the pregnancy of a chinchilla?

The average is 111 days. The shortest normal pregnancy is 105 days and the longest is 118 days, a spread of 13 days.

How do I calculate the due date?

Add 111 days to the mating date. A chinchilla with a mating date of 1 March 2026 is due on 20 June 2026, within a range from 14 June 2026 to 27 June 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 105 and day 118. A veterinarian can give a more precise date for your animal.

How many young does a chinchilla have?

Each birth produces 1–3 kits.

What are the key dates in the pregnancy?

The calculator dates 7 milestones: day 30, weight gain begins to show on weekly weigh-ins; day 60, ultrasound or palpation confirms the pregnancy; kits are often twins; day 90, remove the wheel and high shelves; add a low, safe nest box; day 100, increase alfalfa and keep calcium adequate; limit handling; day 105, earliest normal birth — check the cage each morning; day 111, expected birth; day 118, latest normal birth — see a vet if she is past this. The timeline table above lists each one.

When is the expected birthing date?

The expected birthing date is day 111, which is 15 weeks and 6 days after the mating date.

How does the pregnancy compare with other animals?

At 111 days the chinchilla carries its young shorter than a human (280 days) and longer 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 birthing, and contact a veterinarian immediately in an emergency.

Find Your Chinchilla’s Due Date Now

Enter the mating date and receive the birthing date, the 105–118 day range and the milestones in seconds.

Open the free chinchilla gestation calculator

Read our Disclaimer, Privacy Policy and Terms of Use, or return to the Animal Gestation Calculator home page.

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