Dog Harness Size Calculator

Dog Harness Size Calculator

Find the perfect harness size for your dog based on measurements

Note: This calculator provides harness size recommendations based on standard sizing charts. Always measure your dog carefully and check manufacturer sizing guides.

Dog Information

Measurements (in inches)

Harness Size Recommendation

Recommended Size
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Chest Strap Length
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Neck Strap Length
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Adjustment Range
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Standard Harness Size Chart

Size Chest (inches) Neck (inches) Weight Range Common Breeds
XXS 8-12 6-9 2-8 lbs Chihuahua, Yorkie
XS 12-16 9-12 8-15 lbs Pomeranian, Maltese
S 16-22 12-16 15-30 lbs Beagle, Corgi
M 22-28 16-20 30-50 lbs Border Collie, Australian Shepherd
L 28-36 20-26 50-80 lbs Golden Retriever, German Shepherd
XL 36-44 26-32 80-120 lbs Great Dane, Mastiff
XXL 44-52 32-38 120+ lbs St. Bernard, Newfoundland

Fitting Tips

  • Proper Fit: You should be able to fit 2 fingers between the harness and your dog's body
  • Chest Strap: Should sit behind the front legs, not on the throat
  • Neck Strap: Should not be tight enough to restrict breathing
  • Movement: Your dog should be able to move freely without chafing
  • Adjustment: Most harnesses have multiple adjustment points for a custom fit
  • Growth: Puppies may need size adjustments as they grow
  • Seasonal: Consider seasonal weight changes when fitting

How to Measure Your Dog

  • Chest Girth: Measure around the widest part of the chest, behind the front legs
  • Neck Girth: Measure around the base of the neck where the collar normally sits
  • Back Length: Measure from the base of the neck to the base of the tail
  • Weight: Use a pet scale or bathroom scale (weigh yourself, then weigh yourself holding your dog)
  • Accuracy: Use a flexible measuring tape and measure snugly but not tightly
Important Notes:
  • These are general size recommendations - individual dogs may vary
  • Always check the specific manufacturer's sizing guide
  • If your dog is between sizes, choose the larger size for comfort
  • Consider your dog's body shape and proportions
  • Test the fit before using for extended periods
  • Monitor for signs of discomfort or chafing
  • Consult a professional if you're unsure about sizing
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