Best budget collar
Budget / $Blueberry Pet adjustable collar medium
Budget collar comparison for medium neck ranges.
Amazon / $ / Basic ID wear
SizeMyPet guide
What Size Collar for an Australian Shepherd?
A practical collar size estimate for Australian Shepherd dogs, plus measuring tips and fit checks.
Calculate for your Australian Shepherd
Start here
Find the right starting size
Enter breed, weight, and any measurements you have.
No login neededMeasurement-first
Use breed and weight for a fast estimate. Add measurements for a tighter recommendation, then confirm against the brand chart.
Recommended size
Often 16-22 inches, checked under the coat.
Why this size
Breed estimates are helpful, but every dog is different. Add measurements for a tighter recommendation.
Confidence
Breed or weight estimate
Before buying
Compare this result with the brand's chart and fit notes.
Measure this next
Measure neck circumference next for a tighter result.
Size up if
Size up if the adjusted collar cannot pass the two-finger fit test without sitting at the last hole.
Avoid if
Avoid collars that can slip over the ears or tighten against the throat.
- Start with your dog's measurements whenever possible.
- Always compare this estimate with the specific brand's size chart before buying.
Fit checklist
- Two fingers fit under collar.
- Collar cannot slip over ears.
- Buckle and tag ring are sturdy.
- No hair loss or rubbing.
Options by budget
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Product picks are starting points. Confirm size, price, and availability on Amazon before buying.
Wide everyday collar
Balanced / $$Max and Neo wide collar medium
Balanced medium-dog collar search with wider webbing and reflective options.
Amazon / $$ / Medium dogs
Buying notes
Measure, compare, then choose
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 / $$ / Medium dogs
Best budget collar
Budget / $Blueberry Pet adjustable collar medium
Budget collar comparison for medium neck ranges.
Amazon / $ / Basic ID wear
Wide everyday collar
Balanced / $$Max and Neo wide collar medium
Balanced medium-dog collar search with wider webbing and reflective options.
Amazon / $$ / Medium dogs
Related guides
More Australian Shepherd size guides
FAQ
Australian Shepherd collar FAQ
What size collar does an Australian Shepherd need?
Often 16-22 inches, checked under the coat.
Should I use breed or measurements for an Australian Shepherd?
Use measurements whenever possible. Breed estimates are useful for planning, but individual dogs can vary by build, age, coat, and weight.
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.