How Do I Measure My Pet For A Pet Door?

To choose the right pet door size, you'll need a tape measure and your pet (preferably not napping). 

1. Measure Width

Measure the widest part of your pet, usually across the chest or hips.
+ Add 50mm / 2 inches for clearance.

2. Measure Height

Measure from the bottom of your pet’s chest or belly to the top of their shoulders (whichever is tallest).
+ Add 50mm / 2 inches to ensure they have enough room to walk through comfortably.

3. (Patio Pet Doors Only) Measure Step-Over Height

For pet doors with a fixed flap height (like Patio Pet Doors), also measure your pet’s step-over height – the distance from the floor to the bottom of their chest or belly – to see if a riser or extension is needed.

+ Add 50mm / 2 inches to ensure they have enough room to walk through comfortably.

You may need to size up on the pet door size to accommodate for multiple pet sizes.

4. Choose Your Pet Door

Use your measurements to select the pet door that gives your furry friend enough wiggle room.

Tip: When in doubt, size up - nobody likes squeezing through tight spaces (pets included).