Rabbit Cage Size Calculator — Minimum Space Guidelines

Formula

How this is calculated

Rabbits are active animals that need sufficient space to perform natural behaviours: binkying (sudden leaps and twists), running, grooming and stretching out fully. The Rabbit Welfare Association & Fund (RWAF, 2017) recommends a minimum living space of 3 m² plus at least 2 m² of attached exercise space for a pair of average-sized rabbits. The House Rabbit Society scales the minimum cage length to at least four times the rabbit's body length and the width to at least one body length, ensuring the rabbit can complete a full running stride within the enclosure.

Height is often overlooked: a rabbit must be able to stand fully upright on its hind legs without its ears touching the top of the enclosure, so the minimum height is approximately three times the shoulder height (withers height). This calculator applies all three rules simultaneously.

For multiple rabbits, the required width increases by 50% per additional rabbit as a practical approximation — two rabbits generally need at least 1.5× the single-rabbit width to avoid territorial stress. Always err on the side of more space; these are hard minimums, not targets. Outdoor hutches should be paired with a larger secured run; the minimum 5 m² combined RWAF recommendation far exceeds what a hutch alone can provide.

Note: these figures are guidelines derived from animal welfare organisations and peer-reviewed ethology research (2017 consensus). Local regulations or rescue adoption contracts may specify different minimum sizes.