How to Measure Your Dog for a Carrier Backpack
By Dog & Cat Beds, Crates & Supplies|Free US Shipping Loaf & Wag | Published: 2026-10-30
Category: How-to Guides
Learn to measure your dog's length, height, and weight for a comfortable carrier backpack fit. Get step-by-step instructions and avoid common sizing mistakes.
Quick Answer
Measure your dog's length from chest to rump, height from paws to shoulder, and weight, then compare these to the carrier's dimensions to ensure a snug but comfortable fit.
Why Accurate Measurements Matter
A carrier backpack that's too small can restrict your dog's movement and breathing, while one that's too large risks slipping and discomfort. Accurate measurements help you choose a pet backpack that keeps your dog secure and comfortable during outings.
Even if a carrier lists a weight range, your dog's body shape matters. A long-bodied dog may need a larger size even if their weight fits the range.
Step-by-Step Measuring Guide
- Measure Length: Place your dog standing on all fours. Measure from the base of the neck (where the collar sits) to the base of the tail. This is the length that must fit inside the carrier. Check that your dog's length is at least 2 inches shorter than the carrier's interior length.
- Measure Height: Measure from the floor to the top of your dog's shoulder (withers). This ensures your dog can stand or sit comfortably without hitting the top of the carrier. Compare this height to the carrier's interior height; your dog should not need to crouch excessively.
- Weigh Your Dog: Use a scale to get your dog's current weight. Refer to the carrier's weight limit and choose a backpack that supports your dog's weight with a margin of safety. If your dog is between sizes, choose the larger size for comfort.
- Check the Carrier's Dimensions: Look at the product's listed interior dimensions and weight limit. Compare them with your dog's measurements. If the carrier doesn't list interior dimensions, contact the seller or choose a product that does. Never guess—unlisted dimensions are a red flag for fit.
- Do a Test Fit: Once you have the carrier, place your dog inside for a few minutes. Ensure they can turn around and lie down comfortably. Observe for any signs of distress or rubbing. If your dog seems cramped or restless, try a larger size.
Carrier Options to Consider
- Pet Dog Carrier Bag Carrier for Dogs Backpack Out Double Shoulder: This dog backpack carrier is designed for quick errands to weekend trips, with a practical, portable design made for regular outdoor use. It suits small to medium dogs that fit the carrier's dimensions, making it a versatile choice for daily outings.

Pet Dog Carrier Bag Carrier for Dogs Backpack Out Double Shoulder
