How do I measure my dog?

Length: nose tip to base of tail (NOT to end of tail) — measure with the dog standing or in a 'sphinx' position. Height: top of head to floor with the dog sitting alert (head up). Add 2-4 inches to each dimension for crate fit.

What standard sizes exist?

24in (toy/very small): up to 25 lb · 30in (small): 26-40 lb · 36in (medium): 41-70 lb · 42in (large): 71-90 lb · 48in (extra large): 91-110 lb · 54in (giant): 110+ lb. These are interior dimensions; advertised crate size = interior length.

Should I size for adult or puppy?

Buy adult-size + use a divider. Most large-breed crates ship with a metal divider panel — set it to puppy-current-size and move it back as the puppy grows. Puppy in too-large crate often goes in one corner, sleeps in another (defeats housetraining).

What about airline travel crates?

IATA rules: dog must be able to stand fully (no ducking), turn around 360° in place, and lie down naturally. Most airlines reject crates that fail this. The IATA-conforming crate is usually one size LARGER than the home crate. Verify with the specific airline.

Wire vs plastic vs soft-sided?

Wire: best ventilation, easy to clean, heaviest — best for home use. Plastic: required for airline cargo, less ventilation but more den-like. Soft-sided: travel-friendly, light, can be torn by anxious chewers — only for trained, calm dogs.

Dog Crate Size Calculator

Pet Care· 5 tools

Free dog crate size calculator. Use length and height measurements to find the matching standard crate size (24/30/36/42/48/54 inch). Standard guidance: crate should let the dog stand without ducking, turn around, and lie down comfortably — but no larger (excess space invites in-crate bathroom accidents during housetraining).

Length (nose to tail base)

unit

Height (top of head when sitting, to floor)

Buffer (in)

Standard guidance: 2–4 in / 5–10 cm above measurements. Less for housetraining puppies.

AKC sizing · Crate must allow standing without ducking, turning, lying down.

Airline crates (IATA) typically need to be one size LARGER than home crates.

Recommended size

36-inch (M)

For dogs 41-70 lb

Required interior length31.0 in

Required interior height25.0 in

Standard sizes

Size	Interior length	Typical weight
24-inch (XS)	24 in	up to 25 lb
30-inch (S)	30 in	26-40 lb
36-inch (M)	36 in	41-70 lb
42-inch (L)	42 in	71-90 lb
48-inch (XL)	48 in	91-110 lb
54-inch (XXL)	54 in	110+ lb

Disclaimer: For informational purposes only. This is not veterinary advice — consult a qualified veterinarian for medical or dietary decisions about your pet.

Frequently Asked Questions

References

AKC Crate Sizing Guide — American Kennel Club

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