Step-by-step measuring guides for furniture, rooms, doorways, windows, and appliances, so you know it fits before you buy or move it.
Measuring Guides
Step-by-step measuring guides for furniture, rooms, doorways, windows, and appliances, so you know it fits before you buy or move it.
Wall runs, door swing, walkways, and the delivery path, so a piece fits the room and reaches it.
Clear opening versus nominal size, the diagonal trick, and the inches you gain by pulling the door.
Width, height, and depth of the opening for a window AC, plus sill type and support needs.
Width, depth, height, and the diagonal that decides whether a sofa clears a doorway tilted.
Body width, depth with and without handles, hinge swing, and the air gaps a fridge needs.
Length, width, and thickness by size, and why the diagonal matters for stairs and tight turns.
Measure smart
Four numbers decide nearly every fit check. Get these right and the rest follows.
Don't make these
Most “it didn't fit” stories trace back to one of these oversights.
Frequently asked
Measure the item in all three dimensions and its diagonal, then measure the clear opening of every doorway, stair, and hallway it has to pass. The narrowest point on that path, not the room, is what decides whether it fits.
01A doorway or window passes more on the diagonal than square, so tilting an item uses the larger diagonal of the opening. That is why a sofa taller than a doorway can still go through at an angle. Measure the opening and let the calculator run the tilt.
02Always the clear opening. A nominal 32 inch door gives roughly 30 inches of real clearance once you subtract the frame and stops, and pulling the door off the hinges buys another inch or two. Measure the usable gap, not the label.
03To the nearest quarter inch for the item and the openings. Tight fits live or die on a half inch, so use a steel tape, measure the narrowest point, and leave a small margin rather than betting on an exact match.
04Enter your item and space above, get an instant fit verdict.
Open the fit calculator