Red Kangaroo Gestation Calculator
Last updated
A red kangaroo's gestation period is about 33 days, or roughly 1 month, though it ranges from 30 to 36 days depending on breed and individual animal.
Calculate a joey due date
Estimated birthing date
Saturday, 7 November 2026
Earliest
4 Nov 2026
Latest
10 Nov 2026
0 of 33 days elapsed
Milestone timeline
| Day | Milestone | Date |
|---|---|---|
| 0 | Mating, often within a day or two of the previous joey's birth | 5 Oct 2026 |
| 20 | The embryo develops quickly after any period of diapause ends | 25 Oct 2026 |
| 33 | Birth: the tiny joey crawls into the pouch and attaches to a teat | 7 Nov 2026 |
How to use the red kangaroo gestation calculator
- 1. Choose what you know. Enter the breeding date to get a due date, or switch to the target due date mode to work backwards to the breeding date you need.
- 2. Refine the inputs. The calculator uses the 33-day average for this species.
- 3. Plan around the range. Use the earliest and latest dates and the milestone timeline to schedule checks, feed changes and preparation of the birthing area.
How long is a red kangaroo's gestation period?
The average is 33 days from breeding to birthing, about 1 month. Anything between 30 and 36 days is normal, and a typical litter is 1 joey. Treat the calculated date as the middle of that window rather than a fixed appointment.
Red kangaroo gestation table: breeding date to birthing date
Breeding dates one week apart with the matching birthing date at 33 days.
| Breeding date | Expected birthing date |
|---|---|
| 5 Oct 2026 | 7 Nov 2026 |
| 12 Oct 2026 | 14 Nov 2026 |
| 19 Oct 2026 | 21 Nov 2026 |
| 26 Oct 2026 | 28 Nov 2026 |
| 2 Nov 2026 | 5 Dec 2026 |
| 9 Nov 2026 | 12 Dec 2026 |
| 16 Nov 2026 | 19 Dec 2026 |
| 23 Nov 2026 | 26 Dec 2026 |
| 30 Nov 2026 | 2 Jan 2027 |
| 7 Dec 2026 | 9 Jan 2027 |
| 14 Dec 2026 | 16 Jan 2027 |
| 21 Dec 2026 | 23 Jan 2027 |
Working backwards from a target birthing date
If you want joeys on the ground in a particular week, switch the calculator to target date mode and enter the date you are aiming for. It subtracts 33 days to give the breeding date to book, plus the earliest and latest service dates that still land inside your window.