Duvet Sizes: Which Size Fits Which Bed?

135x200, 155x220, 200x200 – duvet sizes can get confusing fast, especially when your bed doesn't match the standard 140x200 size. Yet the right size determines whether the duvet moves with you when you turn over or leaves your feet cold. This guide shows which duvet size fits which bed size, when two smaller duvets make more sense than one large one, and what to watch for with special formats like box spring beds or extra-long duvets.

A duvet that's too small slips during sleep and leaves shoulders or feet uncovered. A duvet that's too large, on the other hand, hangs untidily over the edge of the bed and makes making the bed in the morning more cumbersome than it needs to be. Duvet size should therefore not follow the commercially standard measurement, but the actual size of the bed.

Why Duvet Size Determines Sleep Comfort

As a rule of thumb, the duvet should extend about 15 to 20 cm beyond the mattress on each long side. This prevents drafts at the sides without excess fabric sliding off the bed. For a bed 90 cm wide, that means a duvet width of about 135 cm – exactly the measurement that has become the most common single duvet size in Germany.

The length follows similar logic but is usually more modest, since it mainly needs to cover the head and foot ends. For a mattress length of 200 cm, a duvet length of 200 to 220 cm is typical.

Duvet Size Chart: The Right Size for Every Bed

The following overview is based on the bed sizes commonly used in Germany and the matching standard duvet sizes:

• 90 x 200 cm bed → 135 x 200 cm duvet
• 100 x 200 cm bed → 135 x 200 cm duvet
• 120 x 200 cm bed → 155 x 220 cm duvet
• 140 x 200 cm bed → 155 x 220 cm duvet
• 160 x 200 cm bed → two duvets of 135 x 200 cm each, or one 200 x 200 cm duvet
• 180 x 200 cm bed → two duvets of 135 x 200 cm each, or two of 155 x 220 cm each
• 200 x 200 cm bed → two duvets of 155 x 220 cm each

These figures are guideline values, not standardized sizes – unlike mattresses, there is no binding DIN standard for duvets. However, the measurements listed have become established as standard sizes across the industry and are offered this way by most manufacturers in Germany.

Single Bed vs. Double Bed: One Large Duvet or Two Smaller Ones?

From a bed width of 160 cm upward, a fundamental question arises: one shared, large duvet, or two separate duvets for each person? Both solutions have their merits, but they lead to different levels of sleep comfort.

A single large duvet looks visually calmer and is simpler when choosing bedding, since only one cover is needed. Two separate duvets, on the other hand, have a practical advantage: if one person moves during sleep, they don't automatically pull the duvet away from the other person. In Scandinavian countries, this two-duvet principle has been standard for decades, and it is increasingly catching on for double beds in Germany too.

Anyone with differing temperature needs – for example, one person who generally sleeps warmer than the other – benefits especially from separate duvets, since this also allows different fill weights to be combined.

Special Formats: Extra-Long Duvets, Box Spring Beds, and King-Size Beds

People taller than 1.90 m often find the standard length of 200 cm insufficient. For this case, there are extra-long duvets, usually 135 x 220 cm or 155 x 220 cm. These measurements also fit many box spring beds, since their sleeping surface is often somewhat more generous than that of classic slatted-frame beds, due to the topper and mattress height.

King-size beds measuring 200 x 200 cm or larger are generally fitted with two separate duvets, less often with a single 220 x 240 cm duvet. The latter is particularly suitable when a seamless look is desired, for example in guest rooms or especially formal bedroom settings.

Material and Warmth Rating: What to Consider Besides Size

The right size is one half of the decision, the right fill the other. Down duvets, synthetic-fill duvets, and duvets with wool filling differ considerably in their warmth behavior, and therefore also in how they can be combined depending on the season. If you combine a light summer duvet with a warmer winter duvet, for example, it's worth choosing the same size for both: this way, they can be layered or swapped as needed without having to choose a new cover.

The weight of the duvet also plays a role in how it feels, independent of its surface size. A 135 x 200 cm duvet with a high fill quantity can be heavier than a 155 x 220 cm duvet with a lighter fill. When choosing, it's therefore worth looking at both figures – size and fill weight – rather than relying on size alone.

Why Maison de Cocon

• Our Tencel™ duvets are available in 140×200, 140×220, 200×200, 200×220, 240×220 and 260×220 cm; the Four Seasons Duvet also in 260×240 cm.
• Single and double duvets are listed as separate items, so the two-duvet principle can be implemented without custom orders.
• Product descriptions list size and fill weight separately, so duvets can be chosen specifically by bed size and desired warmth.
• The color palette is deliberately limited to muted, neutral tones, so duvets purchased separately can be combined visually.

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