Dog Collar Size Calculator
Estimate collar size for a dog by neck circumference with a safe fit margin.
Common questions
- How tight should a dog collar be?
- Two-finger rule: you should be able to slide two fingers snugly between the collar and the neck. Too loose slips off; too tight causes rubbing.
- What collar size for a Labrador?
- Most adult Labs need 18–22 inch collars with a 1-inch width. Puppies grow through 2–3 sizes in the first year.
- How often should I re-measure a puppy's collar?
- Every 2–3 weeks until 6 months old, then monthly until a year.