Dog Harness Size Calculator

Your details

Measure around the widest part of the ribcage, just behind the front legs. This is the key measurement for harness sizing.
in
Measure around the base of the neck where a collar would sit. Used as a secondary check to avoid a too-tight neck opening.
in
Optional but helps when chest girth is near a size boundary.
lb
Recommended sizeSmall
Small

Harness size based on chest girth, with neck and weight as tie-breakers

Chest girth range for that size13.8 to 22.0 in
Neck girth range for that size11.8 to 17.7 in
Typical weight range9 to 26 lb
Suggested leash width0.63 in
Fit noteYour dog is near the upper end of this size. If the straps feel tight at maximum adjustment, size up for comfort.
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Recommended size: Small

  • Chest girth of 22.0 in maps to a Small harness.
  • Neck girth (14.0 in) was used as a secondary check to confirm the neck opening will not be restrictive.
  • Weight (25.0 lb) was used to verify the size when chest girth is near a band boundary.
  • Always verify fit by slipping two fingers under every strap. If you cannot, the harness is too tight.

Next stepAfter fitting, check that the harness does not restrict shoulder movement by watching your dog walk from the front - the front straps should not rub the armpits.

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