10/07/2026
One of them is on his second roll of tape. The other one checked from the doorway.
If you're thinking about going from a Twin to a King, here's the number that matters: a Twin is 39 inches wide and a King is 76. That's nearly double, and 5 inches longer too. And those extra inches don't come out of the bed, they come out of the floor around it. The walk past the dresser, the space beside the nightstand, the closet door that used to open all the way.
The old way to check is painter's tape on the floor, and it still works. There's also a faster way. On your phone, open a mattress on our website that has a 3D view, choose your size, and tap "View in your Space." Point the camera at your bedroom floor and the mattress appears at full size, right where it would go. Walk around it. Open the drawers. Sit on the edge of where it would be.
Two things to know: it shows the mattress on its own, so allow a little extra for a frame or headboard. And try not to pinch the screen, since that changes the size.
It works on iPhone and most newer Android phones. Once you know what fits, come lie on a few at any of our seven stores. Nobody on our floor earns commission, so if the bigger bed isn't worth the squeeze, we'll say so.