Wire Crate Size Lookup & Divider Setter

A wire dog crate size chart matches each crate length in inches to the dog weight its maker states. MidWest lists 26-40 lb for its 30-inch iCrate and 41-70 lb for its 36-inch. Enter your dog’s weight below to compare it with maker and listing ranges, or set a puppy divider.

1. Choose Fit lookup to compare a weight with stated ranges, or Puppy divider to work out divider spacing.
2. In fit lookup, pick the nominal crate size in inches and enter your dog’s weight in lb or kg. Dog length is optional.
3. Press Look up. The headline shows how your dog’s weight compares with MidWest’s stated range for that iCrate size. Below it you’ll see each listing’s stated range, quoted with its ASIN.
4. In divider mode, enter your puppy’s length, a buffer you choose, and the interior length you measured inside your crate. The headline is the divider’s distance from the back panel.

To measure your dog, follow MidWest’s sizing guide. Measure length from the tip of the nose to the base of the tail. Measure height from the floor to the top of the head while your dog is standing. MidWest suggests adding a few inches to each.

The fit lookup doesn’t predict anything. It compares your dog’s weight with each stated range and reports one of four results: within, above, below, or not stated by maker. Weights entered in kilograms are converted using 1 lb = 0.45359237 kg exactly. Lengths entered in centimeters are converted using 1 in = 2.54 cm exactly.

The MidWest iCrate ranges below come from the maker’s product page. Dimensions are exterior, single door, in inches.

Some MidWest ranges overlap. For example, 11-12 lb falls in both the 22-inch and 24-inch ranges, and 70 lb falls in both the 36-inch and 42-inch ranges. When that happens, the tool shows both ranges and doesn’t rank them.

Divider mode uses two steps. First, usable length = puppy length + your buffer. Second, length closed off = crate interior length − usable length. With usable space on the front/door side, the divider sits interior length minus usable length from the back panel. Here’s an example: a 14 in puppy with a 4 in buffer has 18 in of usable length. In a crate measured at 22 in inside, the divider sits 4 in from the back panel and 18 in from the front panel. If the usable length is longer than the interior, the tool reports that it falls outside the crate’s stated length.

We also counted dog weight ranges stated in Amazon listing titles, using a snapshot dated September 27, 2026. A combined range is shown only when at least three listings for a size state a range in pounds.

What size dog fits a 30 inch wire crate? Three listing titles say 21-40 lbs. MidWest’s own iCrate product page states 26-40 lb for the 30-inch iCrate. One of those listings, ASIN B000OXAERM, says “21-40 lbs” (snapshot 2026-09-27), while the maker site says 26-40 lb. Both figures are shown so you can check each one yourself.

Wire dog crate 36 inch: five listing titles state ranges from 30 lb up to 70 lb. MidWest states 41-70 lb for its 36-inch iCrate, which matches two of those listings. For the 24-inch size, MidWest states 11-25 lb, while titles such as ASIN B000OX89VK state “12-20 lbs” (snapshot 2026-09-27).

For the divider, MidWest’s sizing page says most of its crates come with a free divider panel, and the iCrate product page lists a divider panel as included. MidWest suggests moving it gradually as the puppy grows, keeping just enough room to stand, turn around and lie down. The panel should fit snugly across the width of the crate, not the length. MidWest gives no numeric buffer, so you enter your own.

Listing ranges were parsed from non-sponsored Amazon listing titles in our shelf snapshot dated 2026-09-27. Every row was checked by hand, and only titles that state “lb” or “lbs” are counted. We don’t average ranges or invent thresholds. “Not stated” means the source gives no value. Interior lengths aren’t stated in the sources we checked, so the length comparison shows “interior length not stated.” Each listing below is identified by its ASIN, with its exact title quote (snapshot 2026-09-27).

• MidWest iCrate product page: sizes, exterior dimensions, pet weight ranges and included divider panel (accessed October 2026)
• MidWest crate sizing guide: how to measure your dog and place the divider (accessed October 2026)
• 24 in listing titles (snapshot 2026-09-27): B000OX89VK “12-20 lbs”; B000QFWCJ6 “12-20 lbs”; B007R6GQC6 “12-20 lbs”; B000H72HD4 “15-20lbs”
• 30 in listing titles (snapshot 2026-09-27): B000OXAERM “21-40 lbs”; B01DLS2F14 “21-40 lbs”; B00063MQKI “21-40 lbs”
• 36 in listing titles (snapshot 2026-09-27): B000OXAES6 “41-70 lbs”; B000QFT1R2 “41-70 lbs”; B005N0AJBM “50-70lbs”; B000633YNG “50-70 lbs”; B0G1YFN8PW “30-70lbs”
• Single listings, quoted only (snapshot 2026-09-27): 26 in B0009GVR1Q “20-25lbs”; 28 in B00AAPGA2W “15 to 30lbs” and B000MLG484 “25 to 30lbs”; 32 in B00062KOTO “30-50lbs”; 38 in B0D8J25SK5 “10-45lbs”; 40 in B00186XALG “70 to 90lbs”; 42 in B0002AT3ME “71-90 lbs”; 48 in B01DLS2EYM “90-110 lbs”
• NIST: SI Units – Length: 1 in = 2.54 cm exactly
• Wikipedia: Pound (mass): 1 lb = 0.45359237 kg exactly

Sizing outputs are estimates from manufacturer-stated listing data, not veterinary or welfare advice. For behavior, anxiety, heating or safety concerns, consult a veterinarian and see our linked guides. We make no recall, injury, crash-test or escape-proof claims.

Last updated: October 2026

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