Enter your shelves, pick your enclosures, and the layout below updates as you go.
Measure the open space each shelf gives you: width, depth, and height up to the shelf above.
Tap a size to add it. Tap again to add another. Sizes are outside width × depth × height.
Front view of each shelf, drawn to scale. Tap an enclosure to move, turn, or name it.
Your plan is saved in this browser. The link lets you open it on another device or send it to someone, and the image is handy for printing or posting.
Use it to see how many enclosures fit on your shelves before you buy more spiders, to plan a display rack, or to check what changes when slings move up to bigger enclosures. It assumes one row of enclosures per shelf, all facing out, so nothing hides behind anything else. Depth only has to fit. Width decides how many fit side by side, and height decides how many stackable ones fit on top of each other.
It doesn't give care advice about temperature, humidity, or what a species needs. It only checks whether the enclosures physically fit.
Yes, as long as the enclosures are basic rectangles and you know the outside dimensions, you can use this planner for small reptile or amphibian enclosures too. It was built with tarantulas and invertebrates in mind, but the math is the same.
No. The Stacks option only affects the layout. Always follow the enclosure manufacturer's guidance and your own judgment about ventilation, weight, and safety before stacking enclosures.
Yes. Tap an enclosure in the layout and choose Name. Use a species, a nickname, anything you like. Names stay with that enclosure when you move it, and they're included in the link and the downloaded image.
Yes. Switch to centimeters at the top. Anything you've already entered is converted, and the common sizes change to metric ones.
It treats them as the box they sit in, using the diameter or widest point for width and depth.
You can use the main Tarantula List comparison tool to see which vendors have the species you want in stock.