Crate RulerCrate size calculator / Crate divider
Where to set the crate divider
Leave your puppy's length plus 4 inches of space, and move the divider back as it grows.
A mix, or not on the list? Use Adult weight.
For a grown dog. Measure it standing, and sitting up.
For a puppy: the weight you expect it to reach as an adult. Not sure? Give a range.
The red pin marks the crate length on the tape, in inches.
A dog that grows to 65 pounds fits a 36-inch crate.
Measure your puppy, and the space to leave appears here.
The divider setting, worked
A divider panel turns an adult-size crate into a puppy-size one. Measure the puppy from the tip of its nose to the base of its tail, add 4 inches, and slide the divider in so the space is that long.
Worked example: a puppy 14 inches long today needs 18 inches of space. In a 36-inch crate, that puts the divider about halfway. Measure again every couple of weeks and move it back as the puppy grows, until you take it out.
- Measure the puppyTip of the nose to the base of the tail, standing.
- Add 4 inchesThat is the space to leave.
- Set the dividerSlide the panel in so the space from the door end is that long.
- Move it backMeasure again as the puppy grows and move the panel back to match.
The weight bands follow the crate chart PetMD publishes; the plus-4-inches rule is the one Chewy and crate maker MidWest give. Breed weights are typical adult ranges and vary from dog to dog. Sizes here are lengths; widths differ by brand.
Questions
Do all crates come with a divider?
Many wire crates do; plastic crates usually don't. Check the listing before you buy if you want one.
When do I take the divider out?
When the space it leaves is the full crate length, or the puppy's length plus 4 inches reaches it.
Can I use the divider in a crate that's already the right size?
There's no need. The divider is for a crate bought for the grown dog.