Dog Collar Size Guide

Getting the Best Fit

Choosing the correct collar size is important for your dog’s comfort and safety. A collar that is too tight can cause irritation, while one that is too loose may slip over your dog’s head.

This guide explains how to measure your dog’s neck correctly, typical collar sizing ranges, and how to ensure a secure and comfortable fit.

Tip: If you're viewing this chart on a mobile device, zooming out or rotating your phone horizontally may make the tables easier to read.

How to Measure Your Dog's Neck for a Collar

The most important measurement for choosing a collar is your dog’s neck circumference.

Step 1: Use a Soft Measuring Tape

Wrap a soft measuring tape around the base of your dog’s neck where the collar normally sits.

Measure the thickest part of the neck
Ensure the tape is snug but not tight
Record the measurement in centimetres or inches

Step 2: Apply the Two Finger Rule

Once you have the neck measurement, add approximately two fingers of space when choosing a collar size to ensure comfort.

Step 3: Consider Adjustability

Most quality dog collars include adjustable holes or sliding mechanisms to allow small fit adjustments.

Typical Dog Collar Size Chart

Collar Size	Neck Size (cm)	Neck Size (inches)	Typical Dog Size
XS	20 – 28 cm	8 – 11 in	Toy breeds
S	28 – 36 cm	11 – 14 in	Small breeds
M	36 – 46 cm	14 – 18 in	Medium breeds
L	46 – 56 cm	18 – 22 in	Large breeds
XL	56 – 66 cm	22 – 26 in	Giant breeds

Because collar sizing varies slightly between brands, always compare your dog’s neck measurement with the size guide for the specific collar.

How a Dog Collar Should Fit

A properly fitted collar should be secure enough to stay in place but loose enough to avoid discomfort.

The Two Finger Rule

You should be able to slide two fingers comfortably between the collar and your dog’s neck.

Check for Movement

The collar should not rotate excessively or slide over your dog’s head when adjusted correctly.

Watch for Irritation

Check your dog’s neck regularly for signs of rubbing or hair loss, particularly if your dog wears a collar all day.

Typical Collar Sizes by Breed

While every dog is different, the following ranges are common across many breeds.

Small Dogs (Usually XS–S Collars)

Chihuahua
Pomeranian
Yorkshire Terrier
Maltese
Toy Poodle
Mini Dachshund
Shih Tzu

Medium Dogs (Usually M Collars)

Beagle
French Bulldog
Cocker Spaniel
Border Collie
Staffordshire Bull Terrier
Australian Shepherd

Large Dogs (Usually L–XL Collars)

Labrador Retriever
Golden Retriever
German Shepherd
Doberman
Rottweiler
Boxer
Siberian Husky

Explore our collar collection here:

View Dog Collars

Dog Collar Size FAQs

How tight should a dog collar be?

A dog collar should be snug but comfortable. You should always be able to fit two fingers between the collar and your dog’s neck.

What if my dog is between two collar sizes?

If your dog falls between sizes, it is usually best to choose the larger size and adjust the collar for a comfortable fit.

Can puppies wear collars?

Yes, but choose lightweight adjustable collars and check the fit regularly as puppies grow quickly.

Should dogs wear collars all the time?

Many dogs wear collars daily, especially when holding identification tags. However, collars should be removed occasionally to allow the neck to rest.

What type of collar is best for everyday use?

Flat collars made from durable materials such as nylon, leather, or reinforced fabric are the most common choice for everyday use.