Estimate kindling date for your doe based on breeding date and breed size
Rabbit gestation is consistently 28–33 days (most commonly 31 days). Does often kindle on day 31 exactly.
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Breeding rabbits requires precise timing, and knowing your doe’s kindling date helps you prepare nest boxes, adjust nutrition, and ensure a healthy litter. This rabbit gestation calculator estimates your doe’s delivery date based on mating date and breed size, accounting for the remarkably consistent gestation of lagomorphs.
The average rabbit pregnancy lasts 31 days, with normal range of 28 to 33 days. Unlike other livestock, rabbit gestation is highly predictable — most does kindle exactly on day 31. Dwarf and small breeds average 30 days. Medium breeds (New Zealand, Californian) average 31 days. Large breeds (Flemish Giant) average 32 days. First-time does may kindle up to day 32, while experienced does often deliver on day 31.
This calculator does more than predict a kindling date. It shows you days since mating, days remaining, current pregnancy stage, and displays key rabbit gestation milestones from mating through kindling. Rabbit breeders use this information to schedule nest box placement (day 26-28), monitor fur pulling (day 28-30), and prepare for the arrival of kits. Powered by Toolraxy — all calculations happen in your browser with no data storage.
Select your breed size — Choose Dwarf/Small (30d), Medium (31d), Large (32d), or Custom
Enter custom days (if selected) — Set any gestation length between 28-35 days
Enter the mating date — Select the date your doe was bred
Click Calculate — Results update automatically as you change inputs
View the estimated kindling date — See predicted delivery date with color coding
Check days remaining — Know how much preparation time you have left
See the current stage — Understand early, mid, or late pregnancy
Review key milestones — Use the timeline grid for management planning
The rabbit gestation calculator adds breed-specific gestation days to the mating date, then calculates time-based metrics relative to today’s date.
| Breed Type | Gestation Days | Example Breeds |
|---|---|---|
| Dwarf / Small | 30 days | Netherland Dwarf, Holland Lop, Mini Rex, Jersey Wooly |
| Medium | 31 days | New Zealand, Californian, Rex, Satin, English Lop |
| Large | 32 days | Flemish Giant, Checkered Giant, Giant Chinchilla |
| Custom | 28–35 days | User-defined |
Kindling Date Formula:
Days Since Mating:
Days Remaining:
Pregnancy Stage Determination:
Mid Pregnancy: Days Since ≥ 10 AND < 20 Late Pregnancy: Days Since ≥ 20
Worked Example
Scenario: A New Zealand White doe (medium breed) was mated on October 1, 2025. Today is October 16, 2025.
Step-by-step calculation:
Identify breed size: Medium Breed → 31 days gestation
Mating date: October 1, 2025
Calculate kindling date: October 1 + 31 days = November 1, 2025
Days since mating: October 1 to October 16 = 15 days
Days remaining: October 16 to November 1 = 16 days
Pregnancy stage: 15 days ≥ 10 and < 20 → Mid Pregnancy
Check kindling approach: 16 days remaining > 3 → no orange warning yet
Interpretation: The doe is in mid-pregnancy, 15 days along. According to the milestone grid:
Palpation should have been possible at Day 8-10 (October 9-11)
Belly rounding should be noticeable now (Day 14-16)
Nesting behavior may start in 6-8 days (Day 21-23)
The breeder has 16 days to prepare. At Day 26-28 (October 27-29), the breeder should provide a nest box with hay. The orange warning color will appear when 3 days remain (October 29, 2025) — signaling imminent kindling. The doe should pull fur from her chest and dewlap at Day 28-30 (October 29-31).
Dwarf breed example: A Netherland Dwarf mated on October 1, 2025. Select “Dwarf / Small Breed” → 30 days. Kindling date = October 31, 2025 (1 day earlier than medium breed).
The most frequent error is assuming a fixed 31-day gestation for all rabbits — dwarf breeds average 30 days, large breeds 32 days. Another common mistake is missing the palpation window (Day 8-10) and not confirming pregnancy, leading to uncertainty. Providing the nest box too early (before Day 26) may cause the doe to soil it or ignore it. Forgetting that first-time does often kindle 1 day later than experienced does. Finally, not watching for fur pulling — this is the most reliable sign that kindling will occur within 24 hours, regardless of the calculated due date.
A breeder has a Californian doe (medium breed, 31 days) mated on November 15. Using the calculator, due date is December 16.
November 23 (Day 8): Palpation confirms pregnancy (marble-sized embryos)
November 30 (Day 15): Belly rounding noticeable
December 7 (Day 22): Nesting behavior observed (doe carries hay)
December 11 (Day 26): Provide nest box with clean hay
December 13 (Day 28): Doe begins pulling fur, placing it in the box
December 14 (Day 29): Fur pulling intensifies; doe refuses pellets but eats hay
December 15 (Day 30): Calculator shows orange warning (3 days remaining)
December 16 (Day 31): 3 AM — doe kindles 8 healthy kits in the nest box
The breeder followed the milestone timeline precisely, resulting in a successful kindling with all kits warm and alive in the nest box.
Saves time — Instant kindling date calculation without manual date counting
Breed-specific presets — Dwarf (30d), Medium (31d), Large (32d)
Custom gestation — Set any length between 28-35 days
Stage tracking — Know early, mid, or late pregnancy
Visual milestones — Reference grid shows key management benchmarks
Kindling warning — Orange color at 3 days remaining signals imminent delivery
Free to use — No premium version, subscriptions, or registration
Private — All calculations in your browser; no data transmitted
Accessible on any device — Works on phones, tablets, and computers
Countdown display — Days remaining helps with nest box timing
Shareable results — Copy or share timeline with veterinarian or rabbitry manager
The calculator provides estimates based on breed averages. Rabbit gestation is highly predictable — most does kindle within 1 day of the predicted date. Dwarf breeds average 30 days; medium breeds 31 days; large breeds 32 days. Use the calculator as a planning tool and watch for fur pulling (the most reliable sign of imminent kindling).
Without a known mating date, kindling date estimation is difficult. Palpation at Day 8-10 can confirm pregnancy but cannot determine exact due date. For future pregnancies, record the exact mating date — rabbits are induced ovulators, so a single breeding date is usually sufficient.
Delayed kindling beyond 33 days is uncommon. If a doe reaches Day 33 without kindling:
Verify mating date accuracy
Consider possibility of small litter (1-2 kits)
Check for signs of false pregnancy (see below)
Consult a rabbit-experienced veterinarian if concerned
Most does kindle by Day 32 at the latest.
False pregnancy occurs when a doe undergoes hormonal changes simulating pregnancy without actual embryos. Causes include sterile mating, mounting by another doe, or hormonal imbalances. Signs include nesting behavior, fur pulling, and even milk production. False pregnancy lasts 15-18 days. A doe with false pregnancy will not kindle on the calculated date. Palpation at Day 8-10 can detect false pregnancy (no marbles felt). The calculator cannot distinguish false pregnancy from true pregnancy.
Yes. Research shows does with larger litters (8-12 kits) often kindle 1 day earlier than those with small litters (1-3 kits). The calculator’s breed presets use averages. For known large litters (based on previous litters or ultrasound), consider using the lower end of the normal range (30 days for medium breeds).
Provide the nest box at Day 26-28 of gestation. Day 26 for breeds that tend to kindle early (dwarf breeds, does with history of early kindling). Day 28 for breeds that tend to kindle later (large breeds). The calculator’s milestone “Day 26-28: Provide nest box with hay” reminds breeders of this critical timing.
Fill the nest box with clean, dust-free hay (timothy, orchard grass, or meadow hay). Do NOT use straw alone — hay provides better structure for nest building. The doe will arrange the hay and line it with fur she pulls. After kindling, ensure the nest box has a solid bottom (not wire) and a lip high enough to contain kits (4-6 inches).
Yes. Fur pulling is the most reliable sign that kindling will occur within 12-24 hours. The doe pulls fur from her chest, belly, and dewlap, placing it in the nest box to keep kits warm. If a doe reaches Day 28 without pulling fur, she may still kindle on time — some does wait until the final hours. The lack of fur is not a concern until after kindling (the doe will pull fur after delivery if she didn’t before).
Yes. However, first-time does (primiparous) may kindle 1 day later than breed averages — day 31 for dwarf breeds, day 32 for medium breeds, day 33 for large breeds. Experienced breeders may add 1 day to the calculator’s estimate for first-timers, but watching for fur pulling is more reliable than date adjustments.
Contact a rabbit-experienced veterinarian immediately if you observe:
Bleeding from the vulva before due date
Doe refusing water for more than 24 hours
Straining for more than 1 hour without producing kits
Signs of toxemia (lethargy, rapid breathing, collapse)
Green or foul-smelling discharge
Doe not eating for more than 24 hours
Rabbits are prey animals — they hide illness. Any significant behavior change in late pregnancy warrants veterinary attention.
Does can be rebred as soon as 24 hours after kindling (commercial rabbitries often rebreed at Day 14-21 post-kindling). However, many breeders wait until kits are weaned (4-6 weeks) to allow the doe to recover. Consult rabbit management resources for breeding schedules appropriate to your production goals. The calculator focuses on gestation only.
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