Airline Dog Crate Sizing: Measure Your Pup in 3 Steps

How to measure dogs for crates on airlines?

Getting the crate size right is one of the easiest ways to make air travel calmer and safer for your dog. Airlines and cargo programs typically follow IATA-style guidance: your pup should be able to stand naturally, turn around, and lie down comfortably without touching the sides or top.

Step 1: Measure your dog (use inches or centimeters)

Have your dog stand on a flat surface. Use a soft measuring tape (or a string you can measure afterward).

• A: Length — Measure from the tip of the nose to the base of the tail (where the tail meets the body, not the end of the tail).
• B: Height — Measure from the floor to the top of the head. If your dog travels with ears up, measure to the ear tips at their natural standing position.
• C: Width — Measure across the widest part of the shoulders/chest.
• D: Leg length (optional but helpful) — Measure from the floor to the elbow for extra accuracy on crate height guidance.

Step 2: Convert measurements into minimum crate dimensions

A practical sizing method used by many shippers is:

• Crate length = A + a little extra room for a natural down position (often 2–4 inches for small dogs; more for larger breeds).
• Crate height = B (or ear-tip height) + a small clearance so your dog doesn’t brush the roof.
• Crate width = C + a bit of space so your dog can turn around without squeezing.

If you’re between sizes, it’s usually safer to go up—unless an airline has strict maximum dimensions for the specific aircraft.

Step 3: Double-check airline rules before buying

Each airline can set its own requirements for crate construction, door type, ventilation, fasteners, and allowable sizes. Always confirm the latest pet policy for your exact flight, then choose the smallest crate that still allows full, relaxed movement.

Want a cozier option for in-cabin travel?

If your dog qualifies for a soft-sided carrier, see this helpful travel guide: https://kingwuff.com/blog/guide-totengo-brown-canvas-dog-carrier-bag/.

FAQ

How to measure dogs for crates on airlines?

Most dogs do best with a bed that matches their size and sleep style, offers easy-to-clean materials, and provides enough support for their joints—especially as they get older.