Indoor cats live in a flat world unless you build upwards. Shelves, perches, and wall routes turn wasted wall space into territory, exercise, and safe viewing spots. This free cat climbing space planner takes your available wall length and your number of cats and suggests how many shelves and perches to install, so you can plan before you drill a single hole.
Vertical space matters because cats think in height. A high perch lets a shy cat watch the room without being cornered, and a route along the wall lets two cats pass each other without a stand-off on the floor. Homes with little floor space often have plenty of wall space, and cats use every centimetre of it if the route makes sense.
Using the planner is quick. Enter the total wall length you can use, in metres, and how many cats live in the home. Press Plan my wall and you will see a suggested number of shelves and resting perches. The spacing assumes about 60 centimetres between shelf centres, which gives most cats a comfortable step up without a long jump.
The numbers follow a simple logic. Each cat benefits from about three shelves on a route, but the wall itself sets the limit, so a short wall gives fewer shelves than a large multi-cat home might want. Perches are counted as one per cat plus one spare, because cats value a free high spot they do not have to argue over. Stagger the shelves like steps rather than lining them up in a straight row.
A worked example helps. A four-metre wall with two cats gives six shelves and three perches. Six shelves at 60-centimetre spacing fill the wall nicely, and three perches mean each cat can rest high at the same time. On a two-metre wall the same two cats get only three shelves, so you would add a second wall or a tall cat tree to complete the route.
Safety decides the details. Fix shelves into wall studs or use proper wall anchors, never just plaster plugs, and test each shelf with firm hand pressure before a cat steps on it. Keep routes away from cookers, open stairwells, and fragile shelves. Leave a clear way down as well as up, since a cat that can climb up but not down will panic or jump from a bad height.
Placement is as important as count. Start the route near a sofa or a cat tree the cat already uses, run it past a window if you can, and end at a wide perch where the cat can lie flat. Cats love window perches for bird watching, and a perch above a radiator in winter is prime real estate. Avoid dead ends where one cat can trap another.
This planner gives a starting plan, not a finished design. Measure your walls, check your fixings, and watch how your cats use the first shelves before you add more. It is free, it needs no sign-up, and it runs entirely in your browser.
Renters often ask how to build vertical space without drilling, and tall freestanding cat trees, sturdy bookcases with a clear top route, and tension-mounted window perches can create a route with no holes at all. Check the weight rating of every shelf, since a large cat landing from a jump puts far more force on a fixing than its standing weight, and a shelf rated for ten kilos is a sensible minimum. Clean shelves with a quick wipe during your normal cleaning round, because dusty shelves get ignored and a favourite perch covered in dust is a wasted perch. Window routes are the most popular of all, so if you can run shelves toward a window with a wide sill perch at the end, do that first before adding routes elsewhere. Finally, watch your cats for a week after installing, since the routes they actually use tell you more than any plan, and you can move or add shelves to match.