Crate, collar and harness sizes for 66 dog breeds
Three charts, one page: crate length by adult weight, collar size by neck measurement, and harness size by chest girth. Pick your breed in the last table to see the crate size that matches its adult weight, and use the measuring notes before you order anything.
Dog crate size guide: find the right crate, harness and collar
Weight gets you close; a measurement gets you the right size first time. Both finders round to the sizes these products are actually sold in, and both tell you when your dog sits between two.
How to measure a dog for a crate
Measure from the tip of the nose to the base of the tail, not to the tail tip. Add two to four inches and round up to the next crate length. If you only have a weight, that works too, it is just less exact.
How to measure a dog for a harness
Chest girth is the measurement that decides a harness size: run the tape all the way around the ribcage at its widest point, just behind the front legs. For a collar, measure around the neck where the collar will sit and leave two fingers of slack.
This is a planning estimate from published reference tables, not veterinary advice. Confirm feeding amounts, growth and equipment fit with your veterinarian and the manufacturer's own sizing chart.DogBreedCompass does not guarantee the accuracy of any figure or statement here and accepts no liability for how it is used. You are responsible for your own decisions - confirm anything that matters with your veterinarian. Full disclaimer.
Dog crate size chart by weight
Crate length runs in seven steps from 18 to 48 inches, and a dog’s adult weight puts it in one band. The weight breaks below follow the published MidWest Homes for Pets iCrate size guide, which is the chart most US retailers mirror; Frisco’s fold-and-carry crate guide and Petmate’s Vari Kennel chart use the same breaks with at most an inch of difference.
| Adult weight | Crate length | Typical breeds |
|---|---|---|
| Up to 12 lb | 18" long | Chihuahua, Yorkshire Terrier, Maltese, Pomeranian |
| 13-25 lb | 22" long | Pug, Shih Tzu, Boston Terrier, Miniature Schnauzer |
| 26-40 lb | 24" long | French Bulldog, Beagle, Dachshund, Pembroke Welsh Corgi |
| 41-70 lb | 30" long | Border Collie, Australian Shepherd, Boxer, English Bulldog |
| 71-90 lb | 36" long | Labrador Retriever, Golden Retriever, German Shepherd |
| 91-110 lb | 42" long | Doberman Pinscher, Cane Corso, Alaskan Malamute |
| 111 lb and up | 48" long | Great Dane, Newfoundland, Saint Bernard |
Size for the adult dog, not the puppy in front of you. A crate that fits a 12-week-old Labrador is useless four months later, whereas a 36-inch crate with the divider panel fitted works from week eight to old age. The one rule worth keeping: the dog should be able to stand without ducking, turn around without contorting, and lie flat on its side. Anything larger than that stops helping with house-training, because the dog gains a corner it can afford to soil.
Dog collar size chart
Collars are sized by neck circumference in inches, and the weight column below is only a shortlist. Run a soft tape around the neck where the collar will actually sit, slide two fingers underneath, and read the number. The bands follow the measuring guides published by Ruffwear and Kurgo.
| Adult weight | Neck size | Typical width |
|---|---|---|
| Up to 10 lb | 8-12" neck | Width 3/8" to 5/8" |
| 11-25 lb | 12-16" neck | Width 5/8" to 3/4" |
| 26-55 lb | 14-20" neck | Width 3/4" to 1" |
| 56-75 lb | 16-22" neck | Width 1" |
| 76-110 lb | 18-26" neck | Width 1" to 1.5" |
| 111 lb and up | 20-28" neck | Width 1.5" |
Two exceptions are worth knowing. Sighthounds such as Greyhounds and Whippets have necks wider than their heads, so a standard buckle collar slips off and a martingale or wide hound collar is the correct choice. Puppies outgrow a first collar in weeks, so buy adjustable and check the two-finger gap every fortnight until growth stops.
Dog harness size chart
Harness sizes are chest girth: the circumference of the ribcage at its widest point, immediately behind the front legs. Weight is a poor proxy here because chest depth varies far more than weight does, so measure first and treat the weight column as a sanity check.
| Adult weight | Chest girth | Usual letter size |
|---|---|---|
| Up to 10 lb | 12-17" chest | Usually sold as XS |
| 11-25 lb | 17-22" chest | Usually sold as S |
| 26-55 lb | 22-28" chest | Usually sold as M |
| 56-75 lb | 27-32" chest | Usually sold as L |
| 76-110 lb | 31-38" chest | Usually sold as XL |
| 111 lb and up | 36-44" chest | Usually sold as XXL |
When a measurement falls between two sizes, go up and tighten the straps rather than down. A harness that is too small rubs behind the elbows on every walk, and that friction point is the most common reason a well-reviewed harness gets returned.
Crate size for all 66 breeds
Each row below takes the top of a breed’s adult weight range and maps it onto the crate bands above, which is the conservative choice: a dog at the heavy end of its breed range still fits. Select a breed to highlight its row, or scroll the full list.
Weight ranges come from the breed records behind our breed profiles. For a puppy that has not finished growing, run the puppy weight calculator first and size the crate from the predicted adult weight.
How to measure a dog for gear
Four measurements cover everything on this page: body length from the nose to the base of the tail, sitting height from the floor to the top of the head, neck circumference where a collar sits, and chest girth just behind the front legs. Take them with a soft tape on a standing dog, and write them down rather than trusting memory between shops.
Crate length is body length plus 2-4 inches; crate height is sitting height plus 2-4 inches. Collar size is neck circumference plus two fingers of slack. Harness size is chest girth read against the manufacturer’s own chart, because letter sizes are not standardised between brands and an “M” from one maker can be an “L” from another. Re-measure a growing dog every four weeks, and any dog after a significant weight change.
Dog sizing questions
What size crate does my dog need?
Measure your dog from nose to tail base and from floor to the top of the head while sitting, then add 2-4 inches to each figure and round up to the next crate length. Most 50 lb dogs land on a 30-inch crate and most 80 lb dogs on a 36-inch one. Buying by weight alone is close enough for a first crate; buying by measurement is what stops a return.
How do I read a dog collar size chart?
Collar sizes are neck circumference, not weight, so the weight column is only a shortlist. Measure around the neck where the collar will sit, add two fingers of slack, and pick the size whose range contains that number nearer the middle than the end. A 40 lb dog usually measures 14-18 inches, which puts it in the same band as a 55 lb dog with a slimmer neck.
How do I read a dog harness size chart?
Harnesses are sized by chest girth: the measurement all the way around the ribcage at its widest point, just behind the front legs. That number, not the dog's weight, decides the size. Deep-chested breeds such as Greyhounds and Boxers regularly need a size larger than their weight suggests, while barrel-chested Bulldogs often sit between two sizes and need an adjustable model.
What size dog crate for a Golden Retriever?
A 36-inch crate. Adult Golden Retrievers run 55 to 75 lb, which puts them in the 41 to 70 lb band on a 30-inch crate by weight alone, but their body length pushes most adults into the next size up. Measure nose to tail base, add four inches, and buy the 36 if the answer clears 32.
What size dog crate for a German Shepherd?
A 42-inch crate for most adults. German Shepherds finish at 50 to 90 lb and are long-bodied for their weight, so the 36-inch crate that suits a similarly heavy Labrador is usually too short. Buy the 42 with a divider if you are starting with a puppy.
What size dog crate for a Labrador?
A 36-inch crate. Labradors finish at 55 to 80 lb with a compact frame, so they sit comfortably in the 36 while a same-weight German Shepherd needs the 42. If your Lab measures more than 32 inches nose to tail base, size up.
Should I buy a puppy a crate that fits now or one it will grow into?
Buy the adult size and use a divider panel. A crate sized to the adult dog is the cheaper purchase, and the divider keeps the usable space small enough for house-training, which fails when a puppy can soil one end and sleep in the other. Nearly every wire crate at 30 inches and above ships with a divider included.
More dog calculators and charts
Every tool on this site is free, runs in your browser, and uses the same breed dataset. Nothing you type is saved or sent anywhere.
- Puppy weight calculatorEnter your puppy's age in weeks and current weight to estimate the adult weight, then check it against the breed's published range.
- Dog age calculatorConvert dog years to human years using the size-adjusted scale, and see the full 1-to-15-year conversion table for small, medium, large and giant dogs.
- Breed size comparisonPut two or three breeds side by side and compare adult weight, shoulder height and typical lifespan on the same chart.
- Dog food calculatorDaily calories, cups per day and meals per day from your dog's weight and life stage, using the published resting-energy formula and the calories per cup on your own bag.
- Puppy starter plannerA first-30-days plan for a new puppy, built from its breed, age, your home and your schedule: what to do in what order, what to buy, and what the month costs.
- Dog body condition scoreScore your dog on the 9-point body condition scale from three hands-on checks, see the full chart, and find out whether it is carrying the right amount of fat for its own frame.
- Dog cost calculatorCheck whether a monthly budget realistically covers a given breed in a given US city, including first-year and ongoing costs.
- Breed cost comparisonCompare first-year and monthly cost ranges for two breeds side by side, adjusted for city cost of living and vet pricing.
- Dog treat calculatorWork out the 10 percent of daily calories that treats are allowed, then turn that ceiling into a number of the treats you actually buy.
- Dry matter basis calculatorConvert the guaranteed analysis on any dog food label to a dry matter basis, so a wet food and a dry food can be compared on the same footing.
- Dog food cost per calorieCompare foods on cost per 1,000 kcal rather than price per bag, which is the only comparison that survives different kibble densities.
- Dog crate size calculatorMeasure the dog, add the published 3-to-4-inch allowance, and get the minimum interior crate height and length - plus a per-breed height table.
All dog calculators and size chartsBrowse all 66 breed profilesTake the breed match quiz