Put in the day your doe was bred and get every date that follows — the pregnancy check, when the nest box goes in, the kindling date and weaning. Then keep your whole rabbitry in one place with the free app.
Free to start · works offline · made for rabbit breeders
Enter the breeding date below. Everything else is worked out for you.
Plenty of sites will hand you a due date and leave you to write it on a scrap of paper. That's fine until you have six does bred in the same fortnight and you can't remember which one needs a nest box tomorrow. The Rabbit Breeding Calculator app was built for that exact moment — the point where a calculator stops being enough and you need something that remembers for you.
Here is everything it does, in plain terms.
Each rabbit in your barn gets a page of its own: a photo, its name and tag, breed, colour, the cage it lives in, and its date of birth — which the app turns into a running age so you always know how old it is without doing the sums. You record weight too, in pounds and ounces or grams and kilograms, whichever you actually use. Does and bucks are marked clearly, and a rabbit's status — active, sold, retired, or passed — is never more than a glance away.
When you put a doe with a buck, you record it once. From that single date the app lays out the whole timeline: the day to palpate and check for kits, the day the nest box should go in, the kindling date, and when the doe can safely be bred again. You mark whether the mating took — not checked, pregnant, not pregnant, miscarried, or kindled — and the app keeps a running count of how many litters each doe has produced over her lifetime.
After kindling you log the litter: how many were born, how many are alive, how many you lost, and the split of bucks and does. From that the app works out the survival rate for you and tracks how many kits you've sold and kept. Over time this quietly becomes the most honest record you have of which does are actually earning their feed.
Set a rabbit's sire and dam and the app builds its family tree — parents and grandparents laid out so you can see the lineage at a glance. It makes planning pairings easier and helps you avoid breeding animals that are too closely related. Any rabbit's full details can be copied out in one tap, ready to paste into a message or a Facebook sale post.
This is the part that saves litters. The app schedules reminders on your phone for every palpation, nest box and kindling date, and they arrive even when the app is closed and even with no signal in the barn. Tap the reminder and it opens the exact rabbit it's about, so there's no hunting through a list wondering which doe it meant. You choose what time of day they arrive, and they follow your own time zone, so a reminder set for the morning actually lands in the morning where you are.
Keep every vaccination, treatment, check-up and its cost against the rabbit it belongs to. When a buyer asks what a rabbit has had, or you're trying to work out why a line keeps getting sick, the whole history is sitting right there on the animal's page instead of scattered across a notebook.
The reports pull everything together: how many does and bucks you run, how many litters and kits you've had, your average litter size, your survival rate, and which does are your best performers. Alongside that sits a simple ledger for income and expenses — feed, vet bills, sales, equipment — so you can finally see whether the rabbitry is paying for itself. When you want your data out, one tap exports the lot to a CSV file you can open in any spreadsheet.
The app bends to you, not the other way round. Switch weights between imperial and metric. Choose your date format — US, day-first, or ISO. Set your own default gestation length if your breed runs a little short or long, your own weaning age, and your own rebreed interval. Pick the hour your reminders arrive. None of it is buried; it's all a couple of taps away in Settings.
Your records sync to your own private account, so a phone that's lost, broken or upgraded never takes your rabbitry with it. And because the app keeps a copy on the phone itself, it works perfectly with no signal — add a litter standing in the barn, and it syncs the moment you're back on wifi.
Get the app on Google Play →If you're new to breeding rabbits, the vocabulary alone can trip you up. A female rabbit is a doe, a male is a buck, and the babies are kits. Giving birth is called kindling. Once those words click, the rest is mostly about timing — and timing is exactly what the calculator above handles.
A rabbit's gestation period runs about 28 to 34 days, and most does kindle right around 31 days. Bigger breeds like the Flemish Giant tend to sit at the longer end; smaller breeds often kindle a day or two sooner. That's why the calculator lets you choose the gestation length — 31 is the safe default, but you can match it to your own line once you've seen a few litters.
You can't take a rabbit to get a blood test, so breeders rely on palpation — gently feeling the doe's abdomen for the marble-sized kits developing inside. The window for this is roughly 10 to 14 days after breeding. Earlier than that and there's nothing to feel; much later and it gets harder and riskier. It takes practice, and plenty of experienced breeders will tell you they missed it the first few times. The app reminds you when the window opens so you don't forget to check at all.
Give the doe her nest box around day 27 or 28 — a few days before she's due. Too early and she may treat it as a toilet; too late and she may kindle on the wire, which can cost you the litter. A day or two before kindling she'll usually start pulling her own fur to line the nest, which is a good sign birth is close.
Kindling itself is usually quick, often over in under half an hour, and does normally kindle at night or early morning. Check the nest soon after for any kits born outside it or any that didn't make it. The kits' eyes open at around ten days, and they're typically weaned between four and eight weeks, most commonly around six weeks.
Rabbits are famously fertile — a doe can conceive again within a day of kindling. Just because she can, though, doesn't mean she should. Breeding back too fast wears a doe down and hurts the kits she's still nursing. How soon you rebreed depends on your system: some meat breeders run tight cycles, while others give the doe several weeks to recover. The app lets you set your own rebreed interval so its reminders match the way you actually run your barn.
A quick reference for the milestones the calculator works out. Treat these as planning estimates — real timing varies with breed, age, nutrition and the individual doe.
| Milestone | Timing after breeding | What to do |
|---|---|---|
| Palpation | 10–14 days | Gently feel for developing kits |
| Add nest box | 27–28 days | Place it before she kindles |
| Kindling (due date) | 28–34 days (avg 31) | Doe gives birth; check the nest |
| Eyes open | ~10 days after birth | Kits begin to see |
| Weaning | 28–56 days after birth (avg 42) | Separate kits from the doe |
| Rebreed | Varies by system | Let the doe recover first |
Most domestic breeds kindle within a day or two of 31 days. Here's a rough guide for common ones.
| Breed | Typical gestation |
|---|---|
| New Zealand White | ~31 days |
| Californian | ~31 days |
| Flemish Giant | 30–32 days |
| Rex & Mini Rex | ~31 days |
| Holland Lop | ~31 days |
| Netherland Dwarf | 28–31 days |
| Dutch | 28–31 days |
| Angora | ~31 days |
About 28 to 34 days, most commonly 31. Larger breeds lean toward the longer end and smaller breeds toward the shorter. The calculator uses 31 by default and lets you change it.
Usually 10 to 14 days after breeding, by gently feeling the doe's abdomen for the developing kits. It takes practice — don't be discouraged if you can't feel anything the first few times.
Around day 27 to 28, a few days before she's due. Too early and she may soil it; too late and she may kindle without it.
Most litters are 4 to 12 kits. Larger breeds often have more, and smaller breeds fewer. A doe's first litter is sometimes smaller.
A doe can conceive within a day of kindling, but breeding back that fast is hard on her and her current litter. Most breeders wait until weaning or until the doe has recovered — commonly four to six weeks.
You can start free and use the calculator plus the full rabbitry records. The app is available on Android through Google Play.
Breeding dates, litters, pedigrees, health and reminders — in one simple app built for rabbit breeders.
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