SizeMyPet

Dog gear size finder

Find the right dog gear size before you buy.

Use breed, weight, and tape measurements to size crates, harnesses, collars, beds, life jackets, and recovery cones. Cat fit guides live here too.

Start with your dog

Find a size guide fast

Browse all breeds
Dog owner measuring a dog for better fitting gear

Measure first. Order with more confidence.

Breed estimates help, but tape-measure checks make sizing safer.

Quick fit calculator

Choose what you're sizing

Pick gear, choose breed, then add weight or measurements for a clearer starting fit.

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.
No tape handy? Leave measurements blank and use breed plus weight as a starting estimate. Add tape measurements later for a tighter result.

Gear guides

Choose a product type

Cat sizing

Quick cat fit checks

Popular breeds

Start with a breed estimate

Measure in 60 seconds

Use the tape points that matter most

Body length diagram

Body length

Standing height diagram

Standing height

Neck circumference diagram

Neck circumference

Chest/girth diagram

Chest/girth

Nose/snout length diagram

Nose/snout length

Practical guides

Sizing help before you buy

Simple process

How it works

Pick the gear

Choose crate, harness, collar, life jacket, cone, or bed.

Add your dog

Select a breed, weight, age, and any measurements you have.

Check the fit

Use the result, checklist, and brand size chart before ordering.

Measure first when you can

Breed estimates are helpful, but every dog is different. When between sizes, check the brand's chart and fit notes before ordering.

See harness fit guide