Red Fox Gestation Calculator
Last updated
A red fox's gestation period is about 52 days, or roughly 1 month and 3 weeks, though it ranges from 49 to 55 days depending on breed and individual animal.
Calculate a kit due date
Estimated birthing date
Thursday, 26 November 2026
Earliest
23 Nov 2026
Latest
29 Nov 2026
0 of 52 days elapsed
Milestone timeline
| Day | Milestone | Date |
|---|---|---|
| 0 | Mating in mid to late winter | 5 Oct 2026 |
| 30 | The vixen prepares or cleans out an earth or den | 4 Nov 2026 |
| 45 | The vixen stays close to the den; the male brings food | 19 Nov 2026 |
| 52 | Expected birth, usually in spring | 26 Nov 2026 |
How to use the red fox 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 52-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 fox's gestation period?
The average is 52 days from breeding to birthing, about 1 month and 3 weeks. Anything between 49 and 55 days is normal, and a typical litter is 4-6 kits. Treat the calculated date as the middle of that window rather than a fixed appointment.
Red fox gestation table: breeding date to birthing date
Breeding dates one week apart with the matching birthing date at 52 days.
| Breeding date | Expected birthing date |
|---|---|
| 5 Oct 2026 | 26 Nov 2026 |
| 12 Oct 2026 | 3 Dec 2026 |
| 19 Oct 2026 | 10 Dec 2026 |
| 26 Oct 2026 | 17 Dec 2026 |
| 2 Nov 2026 | 24 Dec 2026 |
| 9 Nov 2026 | 31 Dec 2026 |
| 16 Nov 2026 | 7 Jan 2027 |
| 23 Nov 2026 | 14 Jan 2027 |
| 30 Nov 2026 | 21 Jan 2027 |
| 7 Dec 2026 | 28 Jan 2027 |
| 14 Dec 2026 | 4 Feb 2027 |
| 21 Dec 2026 | 11 Feb 2027 |
Working backwards from a target birthing date
If you want kits on the ground in a particular week, switch the calculator to target date mode and enter the date you are aiming for. It subtracts 52 days to give the breeding date to book, plus the earliest and latest service dates that still land inside your window.