Collie size chart: crate, harness & collar
What the published charts say for a Collie, across 19 harnesses, 6 crates and 7 collars. Every answer says how it was reached, and none of them replaces measuring your dog.
Adult Collie
- Height at the shoulder
- Male 24–26 in61–66 cm
Female 22–24 in55.9–61 cm - Adult weight
- Male 60–75 lb27.2–34 kg
Female 50–65 lb22.7–29.5 kg - Chest girth
- 29.5–33.5 in74.9–85.1 cm
- Neck
- 15.7–17.7 in39.9–45 cm
AKC prints: “Height: 24-26 inches (male), 22-24 inches (female)”, “Weight: 60-75 pounds (male), 50-65 pounds (female)”.
Source: AKC breed page, checked Nov 4, 2026.
Source: TARIGS, "Size table for different breeds" (breed row: Collie; inch values as printed, converted by TARIGS from cm; not sex-specific), checked Nov 4, 2026. Girth is a published chart range, not a breed-standard measurement, and is not split by sex.
These are published breed figures, not your dog. Measure your dog — chest girth for a harness, neck for a collar, length and height for a crate.
Sized for a male Collie
Harness sizes
| Harnesses (19) | Size | How it was worked out |
|---|---|---|
| Julius-K9 IDC Powerharness | 0 to 3 (4 sizes) | by chest girthBetween sizes. Check the maker’s chart before you buy.Julius-K9’s sizes overlap, so one dog can fall in several. Measure your dog’s chest and check the maker’s chart. |
| Ruffwear Front Range Harness | M or L/XL | by chest girthBetween sizes. The maker says: “In between sizes? Choose the larger size.” |
| Ruffwear Flagline Harness | M or L/XL | by chest girthBetween sizes. The maker says: “In between sizes? Choose the larger size.” |
| Ruffwear Web Master Harness | M or L/XL | by chest girthBetween sizes. The maker says: “In between sizes? Choose the smaller size.” |
| Kurgo Tru-Fit Smart Harness (quick release) | Large or X-Large | by chest girthBetween sizes. Check the maker’s chart before you buy. |
| PetSafe Easy Walk Harness | Medium to Extra Large (4 sizes) | by chest girthBetween sizes. The maker says: “If your dog is between two sizes, choose a size up.”PetSafe’s sizes overlap, so one dog can fall in several. Measure your dog’s chest and check the maker’s chart. |
| PetSafe Easy Walk 3 in 1 Harness | Medium or Large | by chest girthBetween sizes. The maker says: “if your pet falls in between sizes, size down” |
| Rabbitgoo ControlPro No-Pull Harness (ControlPro series) | L or XL | by chest girthBetween sizes. Check the maker’s chart before you buy. |
| Blue-9 Balance Harness | M to L (3 sizes) | by chest girthBetween sizes. Check the maker’s chart before you buy.Blue-9’s sizes overlap, so one dog can fall in several. Measure your dog’s chest and check the maker’s chart. |
| 2 Hounds Design Freedom No-Pull Harness | 1" Large or 1" XLarge | by chest girthBetween sizes. The maker says: “choose the SMALLEST size that fits the chest measurement” |
| Wild One Classic Cushioned Dog Harness (with neck buckle) | L | by chest girth |
| Wild One Step-In Dog Harness | L | by chest girth |
| Voyager (Best Pet Supplies) Step-In Air Pet Harness | No size | by chest girthThis breed's published chest girth falls outside every size this maker prints. |
| Gooby Comfort X Head-In Harness | No size | by chest girthThis breed's published chest girth falls outside every size this maker prints. |
| Puppia RiteFit Harness (PAJA-AC617) | L or XL | by chest girthBetween sizes. Check the maker’s chart before you buy. |
| Puppia Soft Harness (PDCF-AC30) | XL or XXL | by chest girthBetween sizes. Check the maker’s chart before you buy. |
| Chai's Choice Outdoor Adventure Dog Harness (3M reflective) | L or XL | by chest girthBetween sizes. Check the maker’s chart before you buy. |
| Embark Adventure No-Pull Harness | MEDIUM or LARGE | by chest girthBetween sizes. Check the maker’s chart before you buy. |
| Carhartt Training Dog Harness (Nylon Duck Training Harness, PH0341) | LARGE | by chest girth |
Where a size reads as a span, the breed’s published range reaches across that many of the maker’s sizes. This site shows the span rather than choosing one for you.
Crate sizes
| Crates (6) | Size | How it was worked out |
|---|---|---|
| MidWest Homes for Pets iCrate Single Door Folding Dog Crate | 36-inch or 42-inch | by weightBetween sizes. Check the maker’s chart before you buy.MidWest Homes for Pets lists the outside of the box; the usable inside is smaller. |
| MidWest Homes for Pets LifeStages Single Door Dog Crate | 36-inch or 42-inch | by weightBetween sizes. Check the maker’s chart before you buy.MidWest Homes for Pets lists the outside of the box; the usable inside is smaller. |
| Petmate Sky Kennel | 36" or 40" | by weightBetween sizes. Check the maker’s chart before you buy. |
| Diggs Revol Collapsible Dog Crate | Intermediate or Large | by weightBetween sizes. The maker says: “between sizes, size up” |
| Impact Dog Crates Collapsible Dog Crate | Sizes by measurement only | Impact Dog Crates publishes no dog weight. Use the crate calculator.estimated interior, about ½ in smaller than Impact’s exterior size (Impact’s own note) |
| Frisco (Chewy) Fold & Carry Single Door Collapsible Wire Dog Crate | Med/Large or Large | by weightBetween sizes. Check the maker’s chart before you buy.Frisco (Chewy) lists the outside of the box; the usable inside is smaller. |
Every crate row above is by the maker’s weight guidance, because no published body length exists per breed. A crate is sized on the body: use the calculator below with your own measurements.
Collar sizes
| Collars (7) | Size | How it was worked out |
|---|---|---|
| Ruffwear Front Range Collar | 14"-20" | by neck girth |
| Blueberry Pet Classic Solid Color Adjustable Dog Collar | S or M | by neck girthBetween sizes. Check the maker’s chart before you buy. |
| PetSafe Martingale Collar | Medium (3/4 inch) to Large (3 sizes) | by neck girthBetween sizes. Check the maker’s chart before you buy.PetSafe’s sizes overlap, so one dog can fall in several. Measure your dog’s neck and check the maker’s chart. |
| Max and Neo Martingale All Nylon Dog Collar | Small or Medium | by neck girthBetween sizes. Check the maker’s chart before you buy. |
| Wild One Waterproof Dog Collar | Large | by neck girth |
| 2 Hounds Design Side Release (Buckle) Collar / Buckle Martingale | MD or LG | by neck girthBetween sizes. Check the maker’s chart before you buy. |
| Carhartt Dog Collar | MEDIUM | by neck girth |
Where a size reads as a span, the breed’s published range reaches across that many of the maker’s sizes. This site shows the span rather than choosing one for you.
Sized for a female Collie
Harness sizes
| Harnesses (19) | Size | How it was worked out |
|---|---|---|
| Julius-K9 IDC Powerharness | 0 to 3 (4 sizes) | by chest girthBetween sizes. Check the maker’s chart before you buy.Julius-K9’s sizes overlap, so one dog can fall in several. Measure your dog’s chest and check the maker’s chart. |
| Ruffwear Front Range Harness | M or L/XL | by chest girthBetween sizes. The maker says: “In between sizes? Choose the larger size.” |
| Ruffwear Flagline Harness | M or L/XL | by chest girthBetween sizes. The maker says: “In between sizes? Choose the larger size.” |
| Ruffwear Web Master Harness | M or L/XL | by chest girthBetween sizes. The maker says: “In between sizes? Choose the smaller size.” |
| Kurgo Tru-Fit Smart Harness (quick release) | Large or X-Large | by chest girthBetween sizes. Check the maker’s chart before you buy. |
| PetSafe Easy Walk Harness | Medium to Extra Large (4 sizes) | by chest girthBetween sizes. The maker says: “If your dog is between two sizes, choose a size up.”PetSafe’s sizes overlap, so one dog can fall in several. Measure your dog’s chest and check the maker’s chart. |
| PetSafe Easy Walk 3 in 1 Harness | Medium or Large | by chest girthBetween sizes. The maker says: “if your pet falls in between sizes, size down” |
| Rabbitgoo ControlPro No-Pull Harness (ControlPro series) | L or XL | by chest girthBetween sizes. Check the maker’s chart before you buy. |
| Blue-9 Balance Harness | M to L (3 sizes) | by chest girthBetween sizes. Check the maker’s chart before you buy.Blue-9’s sizes overlap, so one dog can fall in several. Measure your dog’s chest and check the maker’s chart. |
| 2 Hounds Design Freedom No-Pull Harness | 1" Large or 1" XLarge | by chest girthBetween sizes. The maker says: “choose the SMALLEST size that fits the chest measurement” |
| Wild One Classic Cushioned Dog Harness (with neck buckle) | L | by chest girth |
| Wild One Step-In Dog Harness | L | by chest girth |
| Voyager (Best Pet Supplies) Step-In Air Pet Harness | No size | by chest girthThis breed's published chest girth falls outside every size this maker prints. |
| Gooby Comfort X Head-In Harness | No size | by chest girthThis breed's published chest girth falls outside every size this maker prints. |
| Puppia RiteFit Harness (PAJA-AC617) | L or XL | by chest girthBetween sizes. Check the maker’s chart before you buy. |
| Puppia Soft Harness (PDCF-AC30) | XL or XXL | by chest girthBetween sizes. Check the maker’s chart before you buy. |
| Chai's Choice Outdoor Adventure Dog Harness (3M reflective) | L or XL | by chest girthBetween sizes. Check the maker’s chart before you buy. |
| Embark Adventure No-Pull Harness | MEDIUM or LARGE | by chest girthBetween sizes. Check the maker’s chart before you buy. |
| Carhartt Training Dog Harness (Nylon Duck Training Harness, PH0341) | LARGE | by chest girth |
Where a size reads as a span, the breed’s published range reaches across that many of the maker’s sizes. This site shows the span rather than choosing one for you.
Crate sizes
| Crates (6) | Size | How it was worked out |
|---|---|---|
| MidWest Homes for Pets iCrate Single Door Folding Dog Crate | 36-inch | by weightMidWest Homes for Pets lists the outside of the box; the usable inside is smaller. |
| MidWest Homes for Pets LifeStages Single Door Dog Crate | 36-inch | by weightMidWest Homes for Pets lists the outside of the box; the usable inside is smaller. |
| Petmate Sky Kennel | 32" or 36" | by weightBetween sizes. Check the maker’s chart before you buy. |
| Diggs Revol Collapsible Dog Crate | Medium or Intermediate | by weightBetween sizes. The maker says: “between sizes, size up” |
| Impact Dog Crates Collapsible Dog Crate | Sizes by measurement only | Impact Dog Crates publishes no dog weight. Use the crate calculator.estimated interior, about ½ in smaller than Impact’s exterior size (Impact’s own note) |
| Frisco (Chewy) Fold & Carry Single Door Collapsible Wire Dog Crate | Med/Large | by weightFrisco (Chewy) lists the outside of the box; the usable inside is smaller. |
Every crate row above is by the maker’s weight guidance, because no published body length exists per breed. A crate is sized on the body: use the calculator below with your own measurements.
Collar sizes
| Collars (7) | Size | How it was worked out |
|---|---|---|
| Ruffwear Front Range Collar | 14"-20" | by neck girth |
| Blueberry Pet Classic Solid Color Adjustable Dog Collar | S or M | by neck girthBetween sizes. Check the maker’s chart before you buy. |
| PetSafe Martingale Collar | Medium (3/4 inch) to Large (3 sizes) | by neck girthBetween sizes. Check the maker’s chart before you buy.PetSafe’s sizes overlap, so one dog can fall in several. Measure your dog’s neck and check the maker’s chart. |
| Max and Neo Martingale All Nylon Dog Collar | Small or Medium | by neck girthBetween sizes. Check the maker’s chart before you buy. |
| Wild One Waterproof Dog Collar | Large | by neck girth |
| 2 Hounds Design Side Release (Buckle) Collar / Buckle Martingale | MD or LG | by neck girthBetween sizes. Check the maker’s chart before you buy. |
| Carhartt Dog Collar | MEDIUM | by neck girth |
Where a size reads as a span, the breed’s published range reaches across that many of the maker’s sizes. This site shows the span rather than choosing one for you.
Puppy?
Size for the adult and use a divider. A crate bought to fit a puppy is outgrown in weeks, and a crate with a spare end stops working as a den. Buy the adult size and move the divider back as the dog grows. A harness or collar is the opposite: buy for the dog you have now, because adult-sized straps slip on a puppy.
Is your dog a mix?
Mixes vary a lot. Measure your dog. A breed figure describes a published standard, and a mix is not held to one. Two dogs from the same litter can land two sizes apart on the same chart.
Measure your Collie
The tables above start from a published breed range. This starts from your dog. Crates need a body length and a standing height, plus 4 in of room.
Size your Collie
Enter what you have measured. Every answer below is the maker’s own published range against your number — a starting point, not a fitting.
Published range for the Collie: 29.5 to 33.5 in chest, 15.7 to 17.7 in neck (TARIGS, "Size table for different breeds").
Measure your dog and enter it. A published range is a range: the boxes below stay empty because the middle of a range is a number nobody published. Full Collie size chart
Where to put the tape. Leave a box empty and the answers that need it say so, rather than guessing.
Enter a measurement above to see what each maker's chart says.
Sizes come from each maker’s own published chart. Check the maker’s current chart before you buy: charts change, and nothing here is a guarantee of fit.
Common questions
- What size harness for a Collie?
- On the charts published by their makers, a Collie comes out at Julius-K9 IDC Powerharness 0 to 3 (4 sizes), Ruffwear Front Range Harness M or L/XL, Ruffwear Flagline Harness M or L/XL (by published chest girth), with 17 of 19 charts giving a size. Size labels are not comparable between brands, so read the range rather than the letter. Measure your dog's chest girth at the widest part of the rib cage and check it against the maker's own chart before you buy.
- What size crate for a Collie?
- By the makers' own weight guidance, a Collie comes out at MidWest Homes for Pets iCrate Single Door Folding Dog Crate 36-inch or 42-inch, MidWest Homes for Pets LifeStages Single Door Dog Crate 36-inch or 42-inch, Petmate Sky Kennel 36" or 40". Weight is the rougher route: a crate is sized on the body. Measure your dog from the nose to the base of the tail and from the floor to the top of the head while standing, add 4 inches to each, and compare that with the crate's interior, not its outside.
- How big does a Collie get?
- An adult Collie is 24–26 in tall at the shoulder for males and 22–24 in for females, 60–75 lb for males and 50–65 lb for females. Published sizing charts give a chest girth of 29.5–33.5 in and a neck of 15.7–17.7 in. These are breed-standard ranges, not your dog: individual dogs sit outside them. Measure your dog.
Other large breeds
Breeds in the same size group on this site. The group is worked out here from adult male weight; it is not an AKC category.
Compare every chart instead: harness size charts, crate size charts, collar size charts.