How to Measure Your Dog for a Collar

Short answer: Measure around the base of your dog’s neck where the collar naturally rests, then check the product page’s size range before ordering.

What you need

A soft measuring tape, or a piece of string and a ruler
Your dog standing comfortably
The product page for the collar you are considering

Three simple steps

Place the tape around the base of the neck, not high under the jaw.
Keep the tape snug but not tight, and record the circumference.
Compare that measurement with the neck range on the individual product page.

Check the fit

After fastening the collar, you should be able to slide two fingers comfortably between the collar and your dog’s neck. If your measurement falls between two listed ranges, choose only according to the adjustment range shown on that product page.

Measure	Where to measure	Why it matters
Neck circumference	At the collar’s resting position	Determines the usable adjustment range
Collar width	Across the strap	Helps you choose a proportion that looks and feels balanced