Best budget collar
Budget / $Blueberry Pet adjustable collar medium
Budget collar comparison for medium neck ranges.
Amazon / $ / Basic ID wear
Size category guide
Medium Dog Collar Size Guide
Start with medium dog sizing patterns, then confirm your dog's real measurements against the product brand chart.
Interactive tool
Check collar size
Answer a few fields, then compare the result with the brand chart before ordering.
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
medium starting point
Why this size
This is a broad weight-based estimate. Measurements will produce a more useful result.
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
Breed examples
Medium breeds to compare
American Staffordshire Terrier collar size
40-70 lb typical adult range
Australian Cattle Dog collar size
35-50 lb typical adult range
Australian Shepherd collar size
40-65 lb typical adult range
Basenji collar size
22-24 lb typical adult range
Basset Hound collar size
40-65 lb typical adult range
Beagle collar size
20-30 lb typical adult range
Border Collie collar size
30-55 lb typical adult range
Boykin Spaniel collar size
25-40 lb typical adult range
Brittany collar size
30-40 lb typical adult range
Bull Terrier collar size
50-70 lb typical adult range
Bulldog collar size
40-50 lb typical adult range
Chinese Shar-Pei collar size
45-60 lb typical adult range
Chow Chow collar size
45-70 lb typical adult range
Cocker Spaniel collar size
20-30 lb typical adult range
English Cocker Spaniel collar size
26-34 lb typical adult range
English Springer Spaniel collar size
40-50 lb typical adult range
Keeshond collar size
35-45 lb typical adult range
Lagotto Romagnolo collar size
24-35 lb typical adult range
More category guides