How to Measure Your Dog for a Collar (And Get It Right First Time)

Why Getting the Right Collar Size Matters

A collar that's too tight can restrict breathing and cause discomfort. One that's too loose can slip over your dog's head — a real safety risk, especially on walks. When you're investing in a handmade leather collar built to last years, getting the fit right from the start is essential.

The good news? Measuring your dog takes less than two minutes, and you only need a soft tape measure (or a piece of string and a ruler).

What You'll Need

  • A soft fabric tape measure or a piece of string and a ruler
  • Two fingers (yes, really — more on this below)
  • A calm dog (treats help!)

Step-by-Step: How to Measure Your Dog's Neck

Step 1 — Find the right position

Have your dog stand naturally or sit calmly. The collar sits in the middle of the neck — not at the base near the shoulders, and not right up behind the ears.

Step 2 — Wrap the tape measure around the neck

Place the tape measure around the middle of your dog's neck where the collar will sit. Keep it snug but not tight — you want it to lie flat against the fur without pressing in.

Step 3 — Add the two-finger rule

Once you have your measurement, add roughly 2–3 cm (about an inch) to allow for the two-finger rule. You should always be able to slip two fingers comfortably between the collar and your dog's neck. This ensures a safe, comfortable fit.

Step 4 — Note the measurement

Write it down! Dogs can be wriggly, and it's easy to forget. You'll need this number when selecting your collar size.

Collar Sizing at Coco & Blu

All of our handmade leather collars are sized to fit a specific neck measurement range. We offer two distinct collar styles, each with their own size guide:

If your dog's measurement falls between two sizes, we generally recommend sizing up — you can always adjust the buckle, but a collar that's too small can't be let out.

Tips for Specific Coat Types

Long or thick coats

Measure over the coat as it naturally sits — don't part the fur or press the tape into the skin. The collar will sit on top of the coat, so this gives you the most accurate fit.

Short or fine coats

Measure directly against the skin and add a little extra for comfort. Short-coated dogs can sometimes find tight collars more irritating as there's less cushioning between the leather and skin.

Puppies

Puppies grow fast! If you're buying a collar for a puppy, measure them now and choose a collar with enough adjustment range to grow with them. Check the fit every few weeks — what fitted last month may already be too snug.

What If I'm Between Sizes?

Our collars are handmade to order, which means we have some flexibility. If you're unsure, check the size guide for your collar style and feel free to get in touch — we're always happy to advise on the best fit for your dog.

Ready to Find Your Dog's Perfect Collar?

Once you have your measurement, browse our full range of handmade leather collars. Each one is crafted by hand in the UK using premium full-grain leather, with solid brass or stainless steel hardware built to last.