What this calculator does
Rabbit housing is sized from what the animal actually does. Length should allow at least three consecutive hops, width should let it lie fully stretched out, and height should let it stand upright on its back legs without its ears touching the top. Those three behaviours set the three dimensions.
The results are usually larger than commercially sold hutches. A rabbit with a 90 cm hop needs 270 cm of length, which is close to nine feet, and most pet-shop hutches are a third of that. Welfare guidance in several countries now specifies minimums well above what is commonly sold.
The formula
Length is three times the hop distance. Width is the stretched body length. Height is the standing height plus a 10 cm allowance so the ears clear the roof. The floor area is length multiplied by width. These are minimums for the enclosure itself and assume additional daily exercise time outside it.
| Term | Meaning |
|---|---|
| Hop distance | How far the rabbit travels in one relaxed hop. Three of these is the length guideline. |
| Stretched body length | Nose to tail with the rabbit lying fully extended, which is longer than it looks when sitting. |
| Standing height | Floor to ear tips with the rabbit up on its back legs, plus clearance. |
The inputs explained
| Field | What to enter |
|---|---|
| Length of one hop (cm) | One relaxed hop distance in centimetres. Around 70 to 90 cm for a medium rabbit, more for larger breeds. |
| Body length, stretched out (cm) | Stretched body length in centimetres, measured with the rabbit lying fully extended. |
| Height standing on hind legs (cm) | Standing height in centimetres, floor to the tips of the ears when up on the back legs. |
When to use it
Checking a hutch before buying
Measuring the rabbit first and comparing against the hutch dimensions is the only reliable check, since hutches are marketed by breed size rather than by measurement.
Building an enclosure
Three measurements give three dimensions directly, which is a simpler brief than trying to interpret general guidance.
Housing a bonded pair
Two rabbits need more than one, and the usual guidance is to increase the floor area substantially rather than simply accommodating both bodies.
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
What enclosure size does each hop distance need?
A range of hop distances with the body and standing measurements held fixed.
| Hop distance | Minimum cage length | Minimum cage width | Minimum cage height | Minimum floor area |
|---|---|---|---|---|
| 70 cm | 210 cm | 45 cm | 50 cm | 0.95 m² |
| 90 cm | 270 cm | 45 cm | 50 cm | 1.22 m² |
| 110 cm | 330 cm | 45 cm | 50 cm | 1.49 m² |
Questions
How big should a rabbit hutch be?
Large enough for three consecutive hops in length, a fully stretched body in width, and standing upright in height. For a typical medium rabbit that works out around 270 by 45 by 50 cm as an absolute minimum, and most commercially sold hutches fall well short.
Does the enclosure replace exercise time?
No. These are minimums for the housing, not a complete provision. Rabbits need several hours a day in a larger space to run and move properly, and an enclosure meeting the minimum with no exercise time is not adequate.
How much more space do two rabbits need?
Substantially more than one, and guidance generally calls for roughly doubling the floor area rather than adding a little. Bonded pairs do share space, but they also need room to move away from each other.
Why does standing height matter so much?
Because rabbits stand up to look around, and an enclosure that prevents it restricts normal behaviour. A rabbit that cannot raise its head fully is in a space too short, which is a common fault in stacked or multi-level hutches.
For a dog crate rather than a rabbit enclosure, see the dog crate size calculator. For chicken housing, see the chicken coop size calculator.