Inputs used
- Dog length, nose to base of tail (in)
- Sitting height, floor to top of head/ears (in)
- Shoulder width (in)
- Dog size
dog crate size calculator
How the Dog Crate Size Calculator works
Assumptions, formula, inputs, and practical limits for the Dog Crate Size Calculator.
How this estimate works
Measure your dog, add a practical comfort allowance, then round the crate length up to a common retail size. The calculator keeps width generous enough for turning around rather than using length alone.
- Small dogs use about 2 in of allowance; medium dogs use about 3 in; large dogs use about 4 in.
- Recommended width is the larger of twice shoulder width or 55% of recommended length.
- The standard crate length is rounded up to the next common crate size.
Outputs generated
- recommended internal dimensions
- standard crate size
- fit checklist
Worked example
A medium dog measuring 28 in long, 26 in sitting height, and 9 in wide needs about 31 x 18 x 29 in internally, so a 36 in crate is the safer standard size to compare.
Limits of the estimate
This is a sizing guide, not airline, travel, or veterinary advice.
After choosing a likely size, check the internal dimensions from the specific manufacturer. External crate dimensions can be several inches larger than the usable internal space.