6 Best Dog Collar Sizes: The Complete Guide

Every dog needs a collar!

Not only because they’ll look fashionable on your cute dogs, but also because they need something on which to hang their leashes, dog ID tags, rabies vaccination tags, and move on. So, it’s as functional as it is fashionable. The only problem is you’ll be overwhelmed with the abundance of options you can get for your dogs.

Dog collar sizes

This guide on dog collar sizes will take the stress out of picking a collar for your dog.

We’ll cover lots of grounds on how to choose the right size of dog collar, taking the correct measurements to determine the right size, proper usage of dog collars and the different sizes, and other mistakes you should try to avoid when buying a dog collar.

Different Types of Dog Collars

Collars come in different types and sizes.

The type you choose will depend on your type of dog, dog personality, and, most importantly, your preference. The different kinds of dog collars are briefly discussed below;

1. Standard Dog Collars

These are the most common types.

They are often made from leather and nylon, complete with plastic or metal buckles. Standard collars are easy to pull on and are great for dogs that can be off-leash and don’t pull.

2. Martingale Collars

These are also known as “no-slip” collars.

Martingale collars are great for dogs that pull the leash and are designed, so they don’t escape the collar. These collars tighten as the dogs pull the leash without choking the dog.

3. LED Collars

LED collars are great for morning and evening when the environment is dark.

These collars are made from reflective materials that reflect solid or flashing lights, so the dog can be seen easily by pedestrians and cars when you’re out for a walk in the dark.

4. Smart Collars

Smart collars are designed with built-in tracking devices.

Not only can they act as a GPS tracker if your dog loses its way, but they can also help track changes in your dog’s behaviors as well. If you’re the techie type, you’ll like this type of dog collar.

5. Waterproof Collars

Waterproof Dog collar sizes

They are waterproof -just as the name suggests!

Dog owners prefer this type of collar in wet climates because they are usually very comfortable to be worn on dogs at all times. They don’t get wet and can be cleaned easily. These are also great for water sports and on rainy days.

6. Rope Collars

Rope collars are also suitable for your dogs.

They don’t wear down easily, and they don’t feel rough or too tight on your dog’s neck. These collars are simple, comfortable, and durable. If you’re a fan of them, you can always find one your dog will love.

Different Dog Collar Sizes

Dog collars come in different sizes.

You need to understand how dog collar sizing works so you can choose the perfect one for your furry friend that’s not too loose or too tight.

The two-finger rule helps to ensure your dog collar is as comfortable as it can be. To do this, you just have to put two fingers in the space between the dog collar and the dog’s neck. It should accommodate the two fingers easily.

That said, below is a guide on recommended dog collar sizes for different types of dogs based on their neck sizes and similarity between the same breed;

Dog SizeNeck Size (width)Recommended Collar Size (width)Common breeds
Extra-small size8-12″ (20-30cm)3/8″ (16mm)Toy Poodle, Chihuahua, Jack Russell
Small size dogs10-14″ (25-35cm)5/8″(16-19mm)Pug, Cocker Spaniel,  Beagle
Medium size dogs14-20″ (35-50cm)5/8 – 3/4″ (19mm)Dalmatian, Collie, Springer Spaniel,
Large dogs18-30″ (45-76cm)1″ (25mm)German Shepherd, Old English Sheepdog, Boxer,  Labrador
Dog collar sizes

How do I Know my Dog’s Collar Size?

You want your dog collar size to be just right.

If it’s too loose, your dog may be able to lip out of it, run away, get hurt, or even choke if the collar catches on something else. It’s also a safety risk to use a dog collar that’s too tight. This type can tighten your dog’s airways and reduce blood flow. Your dog can suffer pain and skin loss around the tight collar.

So, there’s really nothing better than a comfortable dog collar.

However, comfort here is dependent on knowing your dog’s actual collar size. And here’s to find that out in three simple steps;

  1. Place a measuring tape around your dog’s neck and measure it around.
  2. Add one or two inches to the neck size, depending on how big your dog is.
  3. Check the dog collar size chart above to find your dog collar size range.

What Size is a Medium Dog Collar?

Medium-sized dogs such as the Dalmatian, Springer spaniel, and Collie breeds usually have neck sizes in the range of 14 inches to 20 inches (35cm to 50cm).

Medium dog collar sizes for dogs like these range from about ⅝ inches to ¾ inches, approximately 19mm.

What is the Average Size of a Dog’s Neck?

Most medium-sized dogs have neck sizes ranging between 14 to 20 inches (35-50cm). Dog collar sizes for dogs in this neck size range from about ⅝ inches to ¾ inches, exactly as we said above. Small dogs with neck sizes around 8 to 12 inches (20-30cm) will be fine with dog collar sizes around ⅝ inches (16-19mm).


What size collar does a Labrador need?

The Labrador is usually considered a medium-sized dog. However, it has a sturdy build and so may often be classed as a large dog too. For this case, it will be considered a large dog. The recommended collar size for a dog as large as the average Labrador and with similar neck sizes will be around 1″ (25mm) width.


We already mentioned some of the excellent reasons why you need dog collars.

Whether you just want something to look cute on your dog or you want something on which you can hang its ID, license, rabies vaccinations tags, etc., it’s always essential to choose one that fits well. Hopefully, this guide will be more than enough to help you make an informed decision.

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