To find the correct dog coat size, measure your dog’s back, chest and neck while your dog is standing. Use a flexible measuring tape, keep it snug but not tight, and always compare your measurements with the size chart for the individual coat.
Never select a dog coat by breed or weight alone. Dogs of the same breed or weight can have very different proportions.
Before You Measure
For the most accurate measurements:
- Have your dog stand naturally on all four feet.
- Measure over the fur, without clothing underneath.
- Use a soft fabric measuring tape.
- Record every measurement in inches.
- Keep the tape snug, but do not pull it tight.
The Three Essential Dog Coat Measurements
Before choosing a size, take these three essential measurements. Then compare them with the size chart on the individual product page for the coat you are considering.

1. Back Length
Measure from the base of the neck, where the collar naturally rests, to the base of the tail.
- Keep the tape centered along the spine.
- Do not measure onto the tail.
- Do not begin at the top of the head.
Back length determines how much of your dog’s body the coat will cover.
2. Chest Girth
Measure around the widest part of the chest, directly behind the front legs.
- Keep the tape level around the body.
- Leave enough room for comfortable breathing and movement.
- Pay particular attention to dogs with broad or deep chests.
Chest fit is critical. A coat can be the correct length and still be too tight around the body.
3. Neck Circumference
Measure around the base of the neck where the collar naturally sits.
- The coat should close comfortably without pressing against the throat.
- You should be able to slide two fingers comfortably beneath the neckline.
- Check that your dog can lower and turn their head freely.

See the Canine Styles Barn Coat for an example of a traditionally fitted dog coat.
Important: Canine Styles coats are available in different cuts and constructions. Always use the size chart provided on the individual product page rather than assuming the same size will fit across every coat style.
What If Your Dog Is Between Sizes?
Choose the larger size when your dog:
- Falls between two measurements
- Has a broad chest or heavier build
- Has a particularly thick natural coat
- Will wear a sweater beneath the coat
- Is close to the upper limit of the smaller size
Always consult the size chart on the individual product page. A fitted puffer, barn coat and horse-blanket coat may fit differently.

See the Canine Styles Down Harness Puffer Coat for its individual sizing and fit.
How Should a Dog Coat Fit?
A properly fitted dog coat should:
- Cover the back without extending beyond the tail
- Lie smoothly without pulling or twisting
- Allow full movement of the front legs
- Fit securely without restricting the neck or chest
- Remain clear of bathroom areas
- Stay in position while your dog walks
Watch your dog move naturally while wearing the coat. If your dog shortens their stride, freezes, resists moving or repeatedly tries to remove the coat, check the fit.

See the Canine Styles Quilted Horse Blanket Dog Coat for its individual sizing and fit.
Quick Answers About Measuring a Dog for a Coat
Can I choose a dog coat by weight?
No. Dogs of the same weight can have very different proportions. Back length, chest girth and neck circumference provide a more accurate guide.
Should I measure my dog sitting or standing?
Always measure your dog while standing naturally on all four feet.
Should I size up for layering?
Yes. If your dog will regularly wear a sweater beneath the coat, allow additional room and consider the larger size when your dog is between sizes.
How often should I remeasure my dog?
Remeasure after significant weight changes, growth or major grooming changes that substantially alter the thickness of your dog’s coat.
The Bottom Line
Measure first and always use the product-specific size chart. The correct dog coat should provide warmth and protection without restricting movement.
Canine Styles has designed and fitted dog coats in New York City since 1959. If you are uncertain about sizing, call us at 212-472-9440.