What Size Dog Crate Do I Need? Sizing Made Simple
Measure your dog from nose to tail base for length and from floor to the top of the head for height, then add 2 to 4 inches to each. The crate should let your dog stand, turn around, and lie flat, with no extra room. For puppies, buy the adult size and use a divider.
Crate size is the detail people get wrong most often, and it matters more than the brand on the box. Too small and your dog cannot settle. Too large and a puppy will happily toilet in one corner while sleeping in the other, which slows house training to a crawl.
This guide shows you how to measure once and buy with confidence. If you are still weighing up materials and features too, pair it with our walkthrough on how to choose a dog crate.
How to measure your dog
You only need a soft tape measure and a treat to keep your dog standing still. Take two measurements.
- Length: from the tip of the nose to the base of the tail, not the tail end. Measuring to the tail tip gives a crate that is too long.
- Height: from the floor to the top of the head while your dog stands. For breeds with upright ears, measure to the ear tips instead.
Now add roughly 2 to 4 inches to each figure. That clearance lets your dog change position comfortably without leaving so much room that the space stops feeling snug and secure.
General sizing by weight
Every dog is shaped differently, so treat these bands as a starting point, then confirm with your own measurements. Crate length is usually the number brands advertise.
- Small (up to about 25 lb): a 24 inch crate suits many small breeds and toy dogs.
- Medium (about 25 to 40 lb): a 30 inch crate fits most spaniels and similar builds.
- Large (about 40 to 70 lb): a 36 inch crate works for many retrievers and shepherds.
- Extra large (about 70 to 90 lb): a 42 inch crate covers most large breeds.
- Giant (90 lb and up): a 48 inch crate is the common choice for the biggest breeds.
Long-bodied breeds should be sized on length first so they can stretch out flat, while tall breeds need you to double-check headroom.
Sizing a crate for a growing puppy
You do not need to buy a new crate every few months. The smart approach is to buy the crate your dog will need as a full-grown adult, then use a divider panel to block off the extra space while they are small.
Move the divider back as your puppy grows so they always have just enough room to stand, turn, and lie down. This keeps the den cosy and supports house training, which pairs naturally with our crate training tips. If you are unsure of the adult size, check the expected grown weight for your breed and size up from there.
When to size up or down
The measurements are a baseline, but a few situations call for judgement.
- Size up if: your dog sleeps fully stretched out, is still filling out, or is a long or tall breed that the weight bands underestimate.
- Size down if: your dog rattles around a large crate and seems unsettled, or a puppy keeps toileting inside despite a routine.
- Two sizes: some owners keep a smaller travel crate and a roomier home crate. It is not essential, but it can help for car trips.
When you are stuck between two sizes for an adult dog that is not toilet training, the larger option is usually the kinder pick.
Ready to pick one?
Once you know your size, comparing models is quick. We ranked crates across every size band for build quality, security, and value.
Common sizing mistakes to avoid
A few errors show up again and again, and all of them are easy to sidestep once you know them.
- Measuring to the tail tip: this inflates the length and leaves too much room.
- Buying too big for a puppy: without a divider, the extra space undermines house training.
- Ignoring height: a dog that has to crouch will never truly settle.
- Trusting weight alone: two dogs of the same weight can have very different frames.
Get the size right and everything else falls into place. For more help across the category, browse our Pets guides, or start your model comparison with the best dog crates.
Frequently asked questions
How much bigger than my dog should the crate be?
Add about 2 to 4 inches to your dog’s length and height. They should stand, turn around, and lie flat comfortably, but not have so much room that a puppy can toilet in one corner.
What size crate for a Labrador?
Most adult Labradors fit a 36 inch crate, though larger individuals may be more comfortable in a 42 inch model. Measure your own dog to confirm before buying.
Should I get a bigger crate so my dog has more space?
Not for house training. Extra space encourages puppies to toilet inside. A snug den helps most dogs feel secure, so match the size to your dog rather than oversizing.
Do I need a divider?
If you have a puppy, yes. A divider lets one adult-sized crate shrink to fit them now and expand as they grow, saving you from buying several crates.
How do I measure a dog that will not stand still?
Have someone hold a treat at nose height to keep them standing, then measure quickly. Taking each measurement twice and averaging helps if your dog fidgets.
My dog is between two sizes, which do I choose?
For an adult that is not toilet training, choose the larger size for comfort. For a puppy in training, choose the size that keeps the current space snug, using a divider.