Bed linen – referring to bedsheets, pillowcases, duvet covers, and other decorative elements– is a perfect showcase of style for your bedroom. Coming in countless patterns, styles, or customisation options, bed linen can tie the aesthetic of the entire bedroom together as the room’s central component.

That’s not all – as bed linen can vary in texture, fabric, and other materials, they significantly impact how sleepers benefit from the warmth and softness of inner bedding, and can affect the overall quality of sleep.

With so many different sizes and variations of bed linen available, it can be quite a challenge to find the correct size of bed linen. This guide will help you make an informed decision about the various size names and what they mean.

It’s not necessary to have the exact same size duvet cover as your mattress - for example, you could opt for a king-size duvet for a double mattress, which would allow for extra overlap on the sides of the bed. It is all down to personal preference when it comes to choosing a cover.

Bedding Size Charts for Every Bed Type

There are four standard UK bed sizes, as listed below:

Size Name	Dimensions in Centimetres (cm)
Single	90 x 190
Double	135 x 190
King	150 x 200
Super King	180 x 200

These sizes are based on UK averages and may be subject to variation, depending on the brand. The chart above uses standard sizing, and variations should remain close to the listed sizing.

Choosing the right bed linen size is all about the mattress size, so if you are unsure of the sizing, you should measure your mattress with a tape by width, length, and depth. The majority of mattresses will fit into one of the size categories mentioned in the chart above. Some mattresses will have the size mentioned on their care label.

Most sleepers opt for a fitted sheet over their mattress, as they tend not to become loose and tangled in other bedding, so checking the depth of a fitted sheet against the depth measurement of your mattress is essential in finding a good fit.

Bed Linen Size Chart

The chart below is based on UK standard sizing, although may vary slightly by brand.

	Duvet Covers	Flat Sheets	Fitted Sheets (including depth)
Single	140 x 200 cm	180 x 275 cm	90 x 190 x 30 cm
Double	200 x 200 cm	230 x 275 cm	140 x 190 x 30 cm
King	225 x 220 cm	230 x 275 cm	150 x 200 x 30 cm
Super-King	260 x 220 cm	305 x 275 cm	180 x 200 x 30 cm

The depth of the mattress is typically 30cm, but, as stated above, different mattress brands may offer variations, so be sure to check your mattress depth before purchasing a fitted sheet.