How to Measure Your Dog for the Perfect Fit
Finding the right size for your dog's accessories doesn't have to be difficult. Whether you're buying a collar, harness, coat, lead or bed, taking a few simple measurements will help ensure the perfect fit for comfort, safety and everyday wear.
All you'll need is a soft tape measure (or a piece of string and a ruler) and your dog standing in a natural position.
Top Tip: Measure twice to be sure. If your dog falls between sizes, we generally recommend choosing the larger size for a more comfortable fit.
How to Measure Your Dog's Neck
Your dog's neck measurement is used when choosing collars, some harnesses and neckwear.
How to measure:
Wrap a soft tape measure around the base of your dog's neck where the collar naturally sits.
The tape should be snug but not tight.
Once fitted, you should be able to comfortably slide two fingers between the collar and your dog's neck.
Best for:
Dog Collars
Adjustable Harnesses
Bandanas
Bow Ties
How to Measure Your Dog's Chest
The chest (or girth) is the most important measurement for harnesses, coats and many items of clothing.
How to measure:
Measure around the widest part of your dog's chest.
This is usually just behind the front legs.
Keep the tape level all the way around and snug against the coat without pulling tight.
Best for:
Harnesses
Coats & Jackets
Jumpers
Raincoats
Recovery Suits
How to Measure Your Dog's Back Length
Back length is used for coats, jumpers, raincoats and some beds.
How to measure:
Measure from the base of the neck (between the shoulder blades) to the base of the tail.
Your dog should be standing naturally for the most accurate measurement.
Do not include the tail in the measurement.
Best for:
Dog Coats
Waterproof Jackets
Jumpers
Hoodies
Onesies
How to Measure for a Dog Bed
Choosing the correct bed size helps your dog sleep comfortably and gives them enough room to stretch.
How to measure:
Measure your dog from the tip of the nose to the base of the tail while they are lying naturally.
If your dog likes to stretch out, add approximately 15–30 cm to this measurement.
If your dog prefers to curl up, choose a bed that comfortably fits their curled sleeping position.
When in doubt, choose the larger bed. A slightly larger bed is almost always more comfortable than one that's too small.
Choosing the Right Lead
Leads are generally selected based on your dog's size and strength rather than body measurements.
As a guide:
Smaller, lighter dogs usually suit narrower leads.
Medium to large dogs benefit from wider leads for additional comfort and durability.
DOG SIZING TIPS
✔ Always use a soft tape measure.
✔ Measure while your dog is standing naturally.
✔ Measure over the coat, not over bulky clothing.
✔ Check measurements again after grooming if your dog has a thick coat.
✔ Puppies grow quickly—re-measure regularly.
✔ Weight can be used as a guide, but your dog's measurements are always the most accurate way to choose a size.
Frequently Asked Questions
Should I size up if my dog is between sizes?
Should I size up if my dog is between sizes?
Yes. If your dog falls between two sizes, choosing the larger size usually provides a more comfortable fit and allows room for adjustment.
How tight should a collar or harness be?
How tight should a collar or harness be?
A properly fitted collar or harness should allow you to comfortably fit two fingers between the product and your dog's body. It should feel secure without restricting movement or breathing.
How often should I measure my dog?
How often should I measure my dog?
Adult dogs should be measured occasionally, especially after weight changes or grooming. Puppies should be measured regularly as they grow quickly.
What if my dog doesn't match the weight guide?
What if my dog doesn't match the weight guide?
Always choose your size using your dog's measurements rather than weight. Weight is only a general guide and can vary significantly between breeds.
