Guide

King vs Super King Bed Linen: What's the Difference?

One of the most common sources of confusion when ordering hospitality linen is the difference between King and Super King bed sizes. Getting this wrong means fitted sheets that don't fit, mattress protectors that bunch up, and duvet covers that look sloppy — none of which is acceptable in a professional hospitality environment. This guide clarifies the correct measurements and helps you order the right linen every time.

The Most Common Misconception

Most of the time when guests or buyers refer to a "Super King" bed, they actually mean a King Size with Extra Depth or Extra Length. A true Super King — at 214 cm wide — only occurs in two specific situations: when two ¾ (three-quarter) beds are placed side by side, or when a bed has been custom-made to that width. If two single beds are combined, the result is a standard King, not a Super King.

This distinction matters enormously when ordering fitted sheets, mattress protectors, and base covers. Ordering Super King linen for a standard King bed will result in excess fabric that bunches under the mattress and looks unprofessional.

King and Super King beds side by side from above, labelled 183 cm and 214 cm wide

Correct Bed Size Measurements

King Standard: 182 cm wide × 190 cm long. Mattress depth typically ranges from 30 cm to 35 cm, though this varies by manufacturer.
King Extra Length (XL): 182 cm wide × 200 cm long. Same depth range applies.
Super King Standard: 214 cm wide × 190 cm long. Same depth range applies.
Super King Extra Length (XL): 214 cm wide × 200 cm long. Same depth range applies.

Duvet Cover Sizing: The Exception to the Rule

While fitted sheets, mattress protectors, and base covers must match the exact bed size, duvet covers follow a different logic. We recommend using a Super King duvet cover and inner on a standard King size bed. The extra width creates a fuller, more luxurious drape over the sides of the mattress — which is exactly the look that premium hospitality properties aim for.

Fitted Sheet Depth: Don't Overlook This

Beyond width and length, mattress depth is one of the most overlooked measurements in linen procurement. A fitted sheet that's too shallow will pop off the corners during the night — a common guest complaint. We recommend ordering XD (Extra Deep) fitted sheets as a default, as these accommodate most mattress depths from 30 cm to 40 cm without issue. If you're unsure of your mattress depth, measure from the top surface down to the base of the mattress before ordering.

Practical Tips for Hospitality Buyers

Always measure your mattresses before placing a linen order — width, length, and depth.
If combining two single beds into a king, order King (182 cm) linen, not Super King.
Order duvet covers one size up from the bed size for better coverage and a more luxurious appearance.
Use XD fitted sheets as your default to avoid sizing issues across different mattress depths.
Keep a record of your bed specifications per room type to streamline future reorders.

Need help sizing your linen order?

If you're unsure which size applies to your property, our team at Linen and Co is happy to assist. We supply custom-sized linen for non-standard beds and can advise on the best fit for your specific mattress configuration. See our Mattress and Pillow Protector Size Guide or contact us directly.