Pet Gate Sizes: How Tall and How Wide a Dog or Cat Gate Needs to Be
Gate heights matched to the dog or cat, the widths that fit standard doorways, hallways and open-plan rooms, and which mounting type is safe where. Measure once, and the right gate is easy to pick.
A standard pet gate is 29–32 in (74–81 cm) tall and fits openings of roughly 29–38 in (74–97 cm), which covers most interior doorways; extension panels add width in steps of a few inches. Gates for large or jumping dogs and for cats are 36–41 in (91–104 cm) tall, and low gates for small dogs are about 20–24 in (51–61 cm). At the top of stairs, use only a hardware-mounted gate.
- Standard height
- 29–32 in (74–81 cm)
- Extra-tall height
- 36–41 in (91–104 cm)
- Standard fit width
- 29–38 in (74–97 cm)
- Small-dog bar gap
- 2 in (5 cm) or less
On this page
Pet gate heights by dog size
Height is the first decision. A gate only needs to be taller than the dog will try to clear, but dogs vary more in attitude than in size: a 15 lb terrier can clear a gate a calm 70 lb retriever will never test.
| Gate height | Height (cm) | Suits |
|---|---|---|
| 20–24 in | 51–61 cm | Toy and small dogs; easy for adults to step over |
| 29–32 in | 74–81 cm | Most dogs, small to large, that do not jump |
| 36–41 in | 91–104 cm | Jumpers and climbers, large athletic breeds, many cats |
| 48 in and up | 122 cm and up | Determined jumpers, cats; usually freestanding panels or door-height screens |
A practical test: stand the dog on its hind legs against a wall and note how high its front paws reach. A gate well below that height is only a suggestion. Dogs that can get their front paws over the top bar can usually haul themselves over.
Pet gate widths for doors, halls and open rooms
Gates are sold by the range of openings they fit, not by a single width. Pressure gates have a fixed panel plus a tension mechanism; extensions add width in fixed steps, typically a few inches each.
| Opening | Typical width | Gate to buy |
|---|---|---|
| Narrow interior door | 24–28 in (61–71 cm) | Narrow gate or a standard gate with no extension; check the minimum fit |
| Standard interior door | 28–36 in (71–91 cm) | Standard gate fitting about 29–38 in (74–97 cm) |
| Hallway or wide doorway | 36–48 in (91–122 cm) | Standard gate with one or two extensions, or a wide gate |
| Open-plan opening | 48–80 in (122–203 cm) | Extra-wide hardware-mounted gate |
| Very wide or irregular space | 80 in (203 cm) and up | Configurable panels (play-yard style), angled to fit |
Standard door openings are listed in the door size guide. The opening between the jambs is about 2 in narrower than the door's nominal width once the stop moldings are counted, which is often the difference between a gate fitting and not.
Mounting types and where to use them
Pressure-mounted
- No drilling; installs in minutes
- Good for doorways and the bottom of stairs
- Easy to move between rooms
Watch out for
- Never at the top of stairs: a push can pop it out
- Most have a bottom bar about 1 in (2.5 cm) high that people can trip on
- Can mark painted walls and dent soft drywall
- Hardware-mounted: screws into studs, door frames or wall anchors. Required at the top of stairs, and the only type that suits wide openings. Most swing both ways or can be set to swing away from the stairs.
- Freestanding: a folding screen of two to four panels with feet. Fine for calm dogs and for blocking wide spaces without fixings, but a pushy dog can shove it aside.
- Retractable mesh: rolls into a housing on one side and commonly spans up to about 4–6 ft (122–183 cm), depending on the model. It leaves no bar on the floor, but chewers and diggers defeat the mesh.
Use only a hardware-mounted gate at the top of a staircase, set so it cannot swing out over the steps. A pressure gate there can give way when a dog jumps against it or a person leans on it, and the bottom bar is a trip hazard right at the edge of the stairs.
Bar spacing, walk-through doors and other details
- Bar gaps: most gates have vertical bars about 2–2.5 in (5–6.4 cm) apart. Puppies, toy breeds and cats can squeeze through anything over about 2 in. Choose a gate with a small-pet panel, mesh or a solid lower section for them.
- Walk-through doors: the door in the gate is usually 13–20 in (33–51 cm) wide. Narrow doors are awkward with a laundry basket; check the clear opening if you will carry things through.
- Built-in pet doors: some gates include a small door for a cat or small dog, typically 7–10 in (18–25 cm) wide, so the cat can pass but the large dog cannot.
- Gates and cat flaps: if you want a cat to reach a room a dog cannot, a flap in an interior door works too; see cat door sizes.
How to measure for a pet gate
- Measure the opening at the bottom, middle and top of where the gate will sit. Use the smallest figure. Baseboards often narrow the bottom by 1 in (2.5 cm).
- Check both sides are solid. Pressure gates need flat, parallel surfaces; a pressure gate against a stair banister or a baseboard alone will not hold.
- Note the depth available. Swing doors need about as much clear floor as the door is wide on whichever side they open.
- Pick a gate whose fit range includes your width with the fewest extensions. Every extension adds a joint that can loosen.
- Choose the height from the table above, then add 6 in (15 cm) if the dog has already jumped a gate before.
Pet gates, baby gates and crates
In the US, gates sold for children must meet ASTM F1004 under the Consumer Product Safety Commission's rule for gates and enclosures (16 CFR Part 1239). The ASTM standard excludes pet gates, so a gate sold only for pets has not necessarily been tested for children. In a home with toddlers, buy a gate certified for children, and check bar gaps and the walk-through latch with both in mind. For the space a baby needs, see crib sizes and the kids furniture guide.
A gate gives a dog a room; a crate gives it a den. Many owners use both: the crate door left open inside a gated kitchen. Crate dimensions by weight are in the dog crate size chart, and the pet bed size guide covers what goes inside.
Frequently asked questions
How tall should a gate be for a large dog?
For a calm large dog such as a labrador, a 30–32 in (76–81 cm) gate is usually enough. For athletic or determined jumpers, such as huskies, shepherds and border collies, choose 36–41 in (91–104 cm). If the dog can rest its chin on the top bar while standing on its hind legs, the gate is too low.
How tall does a cat gate need to be?
Most cats clear a standard 30–32 in gate easily: a healthy adult cat routinely jumps onto counters 36 in (91 cm) high and can reach higher surfaces from a standing start. Cat-proof gates are usually 36 in (91 cm) or taller, and floor-to-ceiling screen doors or gates with a top extension are the only reliable option for determined climbers.
How wide is a standard doorway for a pet gate?
Most interior door openings are 28–36 in (71–91 cm) wide between the frames, so a gate that adjusts from about 29 to 38 in fits them. Measure at the height where the gate's mounting points will press, because walls and trim are rarely perfectly straight.
Can I use a baby gate for a dog?
Yes, and many pet gates are sold for both. Baby gates sold in the US must meet ASTM F1004 under the Consumer Product Safety Commission rule, while gates sold only for pets do not have to. If small children are in the home, choose a gate certified for children.
What is the gap between bars on a pet gate?
Usually 2–2.5 in (5–6.4 cm). That stops most dogs over about 10 lb, but puppies, toy breeds and cats can squeeze through gaps over about 2 in. Gates with a lower section of narrower bars or a solid or mesh panel fix that.