Best budget collar
Budget / $Blueberry Pet adjustable collar medium
Budget collar comparison for medium neck ranges.
Amazon / $ / Basic ID wear
Start with a fast estimate, then compare product options once the result is ready.
Start here
Find the right starting size
Enter breed, weight, and any measurements you have.
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Use breed and weight for a fast estimate. Add measurements for a tighter recommendation, then confirm against the brand chart.
Measure carefully
How to choose collars
How to measure
- Measure where the collar naturally sits.
- Add enough room for two fingers under the collar.
- Recheck fit as puppies grow or coats change.
Common mistakes
- Leaving the collar loose enough to slip over the head.
- Choosing a collar that is too narrow for a strong dog.
- Forgetting to check fit after grooming.
Helpful features
- Adjustable length
- Comfortable webbing
- Secure buckle
- ID tag ring
Compare picks
Collar options by budget
Recommended starting pick
Max and Neo wide collar medium
Balanced / $$ / Medium dogs
Wide everyday collar
Balanced / $$Max and Neo wide collar medium
Balanced medium-dog collar search with wider webbing and reflective options.
Amazon / $$ / Medium dogs
Breed links
Popular collar breed guides
Airedale TerrierAkitaAlaskan MalamuteAmerican Staffordshire TerrierAnatolian Shepherd DogAustralian Cattle DogAustralian ShepherdBasenjiBasset HoundBeagleBelgian MalinoisBernese Mountain DogBichon FriseBiewer TerrierBloodhoundBorder CollieBorder TerrierBorzoiBoston TerrierBouvier des FlandresBoxerBoykin SpanielBrittanyBrussels GriffonBull TerrierBulldogBullmastiffCairn TerrierCane CorsoCardigan Welsh CorgiCavalier King Charles SpanielChesapeake Bay RetrieverChihuahuaChinese CrestedChinese Shar-PeiChow ChowCocker SpanielCollieCorgiCoton de TulearDachshundDalmatianDoberman PinscherDogue de BordeauxEnglish Cocker SpanielEnglish SetterEnglish Springer SpanielFlat-Coated RetrieverFrench BulldogGerman ShepherdGerman Shorthaired PointerGerman Wirehaired PointerGiant SchnauzerGolden RetrieverGreat DaneGreat PyreneesGreater Swiss Mountain DogHavaneseIrish SetterIrish WolfhoundItalian GreyhoundJack Russell TerrierKeeshondLabrador RetrieverLagotto RomagnoloLeonbergerLhasa ApsoMalteseMastiffMiniature American ShepherdMiniature PinscherMiniature SchnauzerNewfoundlandNova Scotia Duck Tolling RetrieverOld English SheepdogPapillonPekingesePembroke Welsh CorgiPomeranianPoodlePortuguese Water DogPugRat TerrierRhodesian RidgebackRottweilerRussell TerrierSaint BernardSamoyedScottish TerrierShetland SheepdogShiba InuShih TzuSiberian HuskySoft Coated Wheaten TerrierStaffordshire Bull TerrierStandard SchnauzerVizslaWeimaranerWest Highland White TerrierWhippetWirehaired Pointing GriffonYorkshire Terrier
Browse every breed guideFAQ
Collar sizing questions
Can I choose a collar by breed alone?
Breed estimates are helpful, but every dog is different. Use your dog's actual measurements whenever possible.
What should I do when my dog is between sizes?
Check the brand's chart and fit notes before ordering. Adjustable products can help, but safety and comfort come first.
Do puppies need different sizing advice?
Puppies grow quickly, so adjustable gear can be useful when safe and appropriate. Recheck fit often.
How tight should a dog collar be?
Use the two-finger rule after adjusting the collar. It should not slip over the ears or press into the throat.
How this guidance is made
SizeMyPet gives cautious starting points from breed ranges, product type, and measurements. Brand size charts, product instructions, and veterinarian guidance should decide the final fit.