Before you buy fitted sheets, it is essential to calculate your mattress dimensions correctly to ensure a snug, secure fit. A ill-fitting sheet can slip off during the night, form unsightly folds, or expose the sides or corners, which can disrupt your sleep and shorten the lifespan of your bedding. Start by stripping the mattress completely so you can measure the unobstructed mattress top. Use a soft measuring tape, never a rigid ruler, because it will adapt to the contours of the mattress.

First, measure the head-to-foot dimension of the mattress from the top edge to the head of the bed. Then measure the width from outer edge to outer edge. These dimensions often match industry norms like twin, full, queen, or king, but dimensions aren’t always uniform, so never assume the label is accurate. Next, measure the height of the mattress by placing the tape at the bottom edge and extending it straight up to the uppermost layer. This is critical because deep mattresses, especially those with latex layers, can be 12 inches or more thick. Most regular pocket sheets are designed for mattresses up to 15 inches thick, but if yours is thicker, you’ll need ultra-deep fitted sheets.

Don’t forget to examine the edge shape. Some mattresses feature beveled edges, especially if they are luxury models. If the corners are not square, document the contour so you can select a fitted sheet with a reinforced corner band capable of hugging the curves. Also, consider the mattress cover. If your mattress includes a removable topper, measure with those layers in place since they significantly affect fit.

Once you have all three measurements—length, قیمت روتختی دونفره width, and depth—write them down. Match against the product details listed by the brand. Many brands state the deepest fit, so ensure your mattress depth fall below the maximum. If your mattress is on the edge of the limit, it’s safer to choose a sheet rated for a larger depth. Finally, read buyer feedback for insights on how well they stay on, especially if you’re buying online. Taking the time to measure properly will avoid frustration and ensure a comfortable, secure fit.