HOW TO CALCULATE CRATE DIMENSION
The following guide pet crate size guide has been put together to help you determine what size of pet crate will be best for your pet. In general, you will want to make sure that your pet can completely stand up inside of the crate. Your pet should also be able to lie down and turn around comfortably inside of the crate.
A = length of animal from tip of nose to base/root of tail.
B = height from ground to elbow joint.
C = width across shoulders or widest point (whichever is the greater).
D = height of animal in natural standing position from top of the ear tip to the floor.
Minimum internal container dimensions:
A + ½ B = Length C x 2 = Width D = Height
**Snub nosed breeds require 10% larger container