How to Choose a Dog Crate: Size, Type, and Decision Tree
Walk into a pet store and the crate aisle looks like a parking lot of identical wire boxes. Walk online and it gets worse — 40-inch, 42-inch, “intermediate,” “double-door,” “heavy-duty” — and most of them are not right for your dog. The right crate is the one that matches three things: your dog’s measurements, the way your home actually runs, and what you plan to use the crate for.
Quick answer: To choose a dog crate, measure your dog from nose to tail base and floor to top of head, add four inches to each, and pick a crate at least that long and that tall. Wire crates with dividers suit growing puppies and most home use; plastic crates suit travel and den-seekers; heavy-duty steel suits escape artists.
What “the right crate” actually means
Most crate-buying advice stops at “big enough to stand up and turn around.” That is the floor, not the ceiling. A crate that works long-term has to clear three different bars at once: physical fit, structural type, and household practicality. Skip any one of them and you end up with a $90 box gathering dust in the garage.
We have crate-trained a German Shepherd–Rottweiler rescue from eight weeks through adulthood (that is Kai), plus fostered enough puppies to learn how easy it is to spend money on the wrong crate. The framework below is what we wish we had on day one.
How to measure your dog for a crate
Get this part right and the rest of the decision gets a lot easier. You need two numbers.
1. Length (nose to tail base). Stand your dog up. Measure in a straight line from the tip of the nose to where the tail meets the body — not to the end of the tail. Add four inches.
2. Height (floor to top of head, sitting). Have your dog sit. Measure from the floor to the top of the head (or tip of the ears for prick-eared breeds, whichever is higher). Add four inches.
These two numbers are the minimum length and interior height your crate needs. Pet retailers list crates by their exterior dimensions, so when you shop, look for the interior measurements in the product spec sheet. There is often a 1–2 inch difference, and that is the difference between a comfortable dog and a hunched one.
If your dog is still growing, measure with the projected adult size in mind. Breed weight charts give you a ballpark; if you have a mixed-breed puppy, ask your vet or use the larger parent breed as the reference. A wire crate with a divider lets you size down the interior while your puppy is small, then expand it as they grow — one crate, no upgrade.
Dog crate size chart by weight
Size charts vary by manufacturer, but the categories below cover what nearly every brand sells. Use this as a starting filter, then verify against your measurements above.
| Crate size | Typical length | Adult weight range | Example breeds |
|---|---|---|---|
| Extra small | 22 inches | 1–10 lbs | Chihuahua, Yorkie, Maltese |
| Small | 24 inches | 11–25 lbs | Mini Dachshund, Pomeranian, Pug |
| Medium | 30 inches | 26–40 lbs | Beagle, Cocker Spaniel, Mini Schnauzer |
| Intermediate | 36 inches | 41–70 lbs | Bulldog, Border Collie, Springer Spaniel |
| Large | 42 inches | 71–90 lbs | Labrador, Golden Retriever, Boxer |
| Extra large | 48 inches | 91–110 lbs | German Shepherd, Doberman, Rottweiler |
| XXL / giant | 54+ inches | 110+ lbs | Great Dane, Mastiff, Saint Bernard |
Kai sits in the 42-inch range as a leaner Shepherd mix; a heavier Rottweiler-dominant build of the same weight may need 48-inch. The breed column is a hint, not a rule — your measurements decide.
Crate types compared
Once you know your size, pick the material. There are four mainstream types and they solve different problems.
| Type | Best for | Watch out for |
|---|---|---|
| Wire (collapsible) | Daily home use, puppies with dividers, hot climates, dogs that want to see the room | Heavier to move, less den-like privacy, cheaper models can rust |
| Plastic (airline-style) | Car travel, air travel, anxious dogs who want enclosed space, secondary crate for road trips | Reduced airflow, chewable interior, larger sizes do not fold for storage |
| Soft-sided (fabric) | Calm adult dogs, short trips, agility shows, weekend boarding | Not for chewers, escape artists, or puppies in training |
| Heavy-duty (steel) | Escape artists, severe separation anxiety, dogs that have damaged wire crates, working-breed crate athletes | Three to five times the price, heavier, harder to relocate |
For deeper trade-offs between the two most common types, our best wire crates for puppies roundup walks through specific models and what to look for in build quality.
The DAH decision tree
Three questions, in order, and you are done.
Question 1: Is this crate for a growing puppy, or an adult?
Puppy: buy a wire crate sized for the projected adult weight, with a divider. You will use one crate from eight weeks to maturity. Plastic crates do not divide well; you would buy two or three over the same period.
Adult: skip ahead to question 2.
Question 2: Where will this crate live most of the time?
Living room, kitchen, bedroom (stationary, home use): wire crate. Better ventilation, your dog can see the family, easy to wipe down. If your home runs cold or your dog burrows, drape the back and sides with a breathable cover.
Car or RV (mobile use): plastic crate. The solid sides absorb the visual chaos of a car ride and give a nervous dog something close to a den. For larger dogs in trucks, secure the crate with cargo straps.
Both: most multi-dog or working homes own two crates. A wire crate at home and a smaller plastic crate for travel is a normal setup, and it costs less than one heavy-duty steel crate.
Question 3: Has your dog ever damaged a crate?
Yes — bent the bars, chewed through the door, broken plastic clips during a panic episode: you need heavy-duty steel. This is also the right call for severe separation anxiety while a behavior plan is in progress. If panic is the cause, pair the crate purchase with a vet or behavior consult; a stronger crate alone does not solve the underlying fear.
No, but they are a known chewer of beds and toys: wire crate is fine; just avoid soft-sided. Skip plastic if the dog chews everything plastic.
No, never damaged anything: standard wire or plastic by question 2.
Our hero pick for most homes
If you want one well-built wire crate that handles puppyhood through adulthood without surprises, the MidWest iCrate is the option we keep coming back to. It is the crate Kai grew up in, and the one we recommend to nearly every new-puppy household we talk to.
Why this one and not a cheaper lookalike: the iCrate ships with a divider out of the box (you are not buying it separately at week ten when the puppy outgrows the starter setup), the double-door layout actually matters when you place the crate against a wall, and the floor pan is leak-proof in the way budget pans are not. After years of nightly use we haven’t had to replace anything.
What it is not: not the right crate for a dog that has already destroyed a wire crate. If that is your situation, the iCrate will go the same way and you should go directly to a heavy-duty steel build.
Common crate-buying mistakes to avoid
These are the patterns we see most often when people end up with a crate they do not use.
Buying by breed instead of by measurement. Two adult Labradors can be ten pounds apart and a full size category apart. Measure your dog.
Going too big “so they have room.” A crate that is too large lets a puppy designate one end as the bathroom and the other end as the bed. House training stalls. Use the divider while the crate is being used for potty training; expand it once they reliably hold it overnight.
Skipping the floor pan check. Wire crates ship with plastic or metal floor pans. Plastic pans crack within a year on larger sizes. Look at the spec sheet, or assume you will be ordering a replacement.
Treating the crate as punishment. The crate is a quiet, predictable space — never a time-out. We cover the daily routine in our crate training at night guide, and the free puppy plan sets up the first two weeks so the crate becomes a positive default.
Forgetting the room it lives in. A 42-inch wire crate is a piece of furniture. Measure the floor space before you buy. If the only spot available is a hallway corner, you may need a furniture-style end-table crate instead of standard wire.
Setting the crate up after you bring it home
The crate is one of the five items we recommend every new-puppy household has on day one — see our puppy training essentials list for the full set. A good setup includes: divider sized for the current week, a chew-safe mat (avoid plush beds until you know your puppy will not eat them), one shred-proof chew, fresh water clipped to the door, and a location with line-of-sight to wherever the family spends evenings.
Skip anything that adds calories or chewable fluff inside the crate during the first two weeks. The crate is a sleep and quiet-time space, not a buffet.
Frequently asked questions
What size crate does my dog need?
Measure your dog from nose to tail base (length) and floor to head while sitting (height). Add four inches to each. The crate’s interior dimensions need to meet or exceed both numbers. Use the size chart above as a starting point, then confirm against your measurements.
Should I buy a crate for my puppy’s current size or adult size?
Adult size, with a divider. Buy a wire crate sized for the puppy’s projected adult weight, use the divider to shrink the interior while they are small, and move the divider back as they grow. One crate, no upgrade cycle.
Is a wire crate or plastic crate better?
Wire for daily home use, growing puppies, and hot climates. Plastic for travel, anxious dogs that need an enclosed den, and air travel. Many households own both. We have a longer breakdown in our wire crate vs plastic crate comparison.
How big should a dog crate be?
At minimum, four inches longer than your dog (nose to tail base) and four inches taller than your dog (sitting height). Wider crates feel more humane long-term; cramped crates get avoided. Do not go so large that a puppy can pee in one corner and sleep in the other.
Where should I put the crate in my house?
A low-traffic corner of a room where the family spends time — usually a living room or family room — with line-of-sight to people. Avoid direct sun, drafts, and spots next to noisy appliances. For new puppies, move the crate to your bedroom for the first one to two weeks of nighttime training, then relocate gradually.
Do dogs need a crate forever?
No. Most dogs graduate to free roam between 12 and 24 months once they reliably hold their bladder overnight and stop destroying things when bored. The crate stays available as a quiet space, but the door stays open. Reactive dogs, dogs with separation anxiety, and dogs that travel often keep using the crate as a working tool for life.
Can I leave my dog in a crate all day?
No. Adult dogs should not be crated for more than four to five hours during the day (longer overnight is fine because they sleep). Puppies under six months need a mid-day break. If your schedule does not allow that, look into a midday walker, daycare, or a playpen-and-crate combo instead.
Bottom line
Pick the crate by measurement, not breed. Match the type to where the crate will live — wire at home, plastic in the car, heavy-duty only if you have a confirmed escape artist. Buy for the adult size with a divider if your dog is still growing. Get those three things right and the crate becomes the most useful piece of dog gear in the house instead of an expensive mistake.
Related reading
- Best wire crates for puppies (2026) — specific models with tier-by-tier picks
- How to crate train a puppy at night — the routine that makes the crate work
- 5 puppy training essentials for day one — what to set up alongside the crate
- Dog products pillar — every product piece on the site