What Size Are Double Bed Sheets? Double Bed Sheet Size Chart Explained

In US bedding, a double bed sheet fits a full-size mattress measuring about 54 x 75 inches, so double and full are the same size.

For the full breakdown, see our best Double-Bed Sheets guide.

Buying sheets for a double bed goes sideways for one reason: American bedding charts treat “double” and “full” as the same mattress, while a handful of brands quietly disagree on the numbers. Get the pocket depth wrong and the fitted sheet pops off the corners on the first stretch. Get the flat sheet wrong and two sleepers are fighting over the same six inches of fabric by 3 a.m.

The essentials fit on one screen. A US double or full mattress runs 54 x 75 inches, fitted sheets are cut to that footprint (with a little tolerance), and flat sheets land somewhere between 81 x 96 and 96 x 102 inches depending on the maker. The rest of this page covers the exact chart, why brand numbers drift, and how to pick a set that actually stays put.

Is A Double Bed The Same As A Full Bed?

Yes — in the US, “double” and “full” name the identical mattress size, roughly 54 x 75 inches. Bedding charts from American Textile and Frette list them as one category, and most US retailers use the labels interchangeably. A double sheet set IS a full sheet set.

What trips people up is that “double” sounds like it should mean double the width of a twin. It doesn’t. A twin measures about 38 x 75 inches, so a double is only 16 inches wider — not two twins pushed together. That naming legacy is why some shoppers assume double sits between full and queen when it doesn’t; a queen jumps to about 60 x 80 inches, a genuinely bigger bed.

Outside the US, the word “double” can mean something else entirely. UK and European double beds run closer to 54 x 75 inches in some markets but shift in others, and imported sheet sets sometimes follow those conventions. If a listing doesn’t say “US full” or give inches, measure before you buy.

Double Bed Sheet Size Chart

A US double or full fitted sheet is built to fit a 54 x 75 inch mattress, and the flat sheet runs wider and longer — but the exact flat-sheet dimensions move around by brand. The chart below shows the ranges current bedding sources publish.

Read the fitted-sheet row first. That number decides whether the set fits at all; the flat sheet only decides how much overhang you get.

One buying shortcut: a fitted sheet cut exactly to 54 x 75 inches with a deep enough pocket covers nearly any full mattress. If the roundup of double bed sheets you’re browsing lists pocket depth in the specs, check it before anything else — that single number is the top reason a “double” set arrives and won’t stretch over the corners.

Why Sheet Sizes Vary By Brand

Two sheets both labeled “full/double” can differ by several inches because manufacturers pad their cut for shrinkage and fit tolerance. American Textile lists full/double at 54 x 75 inches; other makers round to 53 x 75 or cut fitted sheets at 55 x 75. None of them are wrong — the labels are approximate, not exact.

Two things drive the drift:

• Fit tolerance — extra fabric so the fitted sheet stretches over the mattress rather than straining the elastic.
• Shrinkage allowance — cotton and blends can pull in slightly after the first wash, so makers cut a little generous.

Flat sheets vary even more, since there’s no elastic forcing a standard. Frette publishes flat sheets in the 81 x 96 to 96 x 102 range for full/double depending on the collection, and that spread is normal, not a defect.

Depth is the spec that breaks most purchases. A standard double mattress runs about 9 to 12 inches thick, but add a mattress topper or buy a pillow-top and you’re at 14 to 16 inches. A fitted sheet with 14-inch pockets won’t cover a 16-inch mattress — it’ll ride up the moment someone turns over. Match the pocket depth to your actual mattress height, measured corner to corner.

How To Pick Double Bed Sheets That Fit

Match the fitted sheet to your mattress dimensions and depth, then treat the flat sheet as a preference. That order prevents the most common return.

Run this check before buying:

1. Measure your mattress. Width and length first — expect about 54 x 75 inches for a standard full/double. If it’s off by more than an inch, that’s your true size.
2. Measure the height. From the top surface straight down to the bottom edge, including any topper. This is the number your fitted sheet’s pocket depth must beat.
3. Check the fitted-sheet spec. Pocket depth must be equal to or deeper than your mattress height. 14 inches clears a bare mattress; go 16 inches or deeper with a topper.
4. Read the flat-sheet dimensions. Longer and wider means more overhang and a better tuck. If you sleep with a partner, lean toward the larger cuts.

The common mistake is trusting the bed name over the numbers. “Double” tells you almost nothing once a topper is involved, and brand charts disagree — so the tape measure wins every time.