Duvets by Size

What Duvet Size Do I Need?

The best duvet size depends on both the size of your mattress and the amount of coverage you prefer. A duvet is normally wider than the mattress so that it can comfortably cover the sleeper and hang over each side of the bed.

For standard UK beds, choosing the corresponding duvet size is usually straightforward. However, beds such as Long Singles, Large Singles, Small Doubles, Emperor and Caesar beds often benefit from a duvet specifically made for their dimensions rather than simply moving up to the next standard UK size.

Oversized and non-standard bed terminology varies between manufacturers. If you already own a duvet or duvet cover that fits well, measuring it is the safest way to confirm the size you require.

Shop Duvets by Bed Size

Single Duvets

Our Single duvets measure approximately 135 × 200cm and are designed for a standard UK 3ft single bed. Choose from a range of fillings and tog ratings for children, adults, guest bedrooms and everyday use.

Long Single Duvets

A standard single duvet can feel too short on a longer mattress. Our Long Single duvets measure approximately 135 × 220cm, providing an extra 20cm of length for long single and extra-long beds.

Large Single Duvets

Designed for wider 3ft 6in beds, our Large Single duvets provide more coverage than a conventional Single without the excessive width of a Double duvet.

Small Double Duvets

Our Small Double duvets measure 184 × 220cm and are specifically designed for 4ft and three-quarter beds. They provide a better-proportioned fit than using either a Single or full-size Double duvet.

Double Duvets

A standard UK Double duvet measures approximately 200 × 200cm and is designed for a conventional 4ft 6in double mattress. Browse our Double duvets in a choice of synthetic and natural fillings.

King Size Duvets

Our King Size duvets measure approximately 230 × 220cm, giving generous coverage across a standard UK 5ft king bed.

Super King Duvets

For a standard UK 6ft bed, a 260 × 220cm Super King duvet offers additional width for two sleepers and a balanced overhang at either side of the mattress.

Emperor Duvets

Our Emperor duvets measure approximately 290 × 235cm. They are considerably larger than a Super King duvet and are suitable for standard 200 × 200cm Emperor mattresses as well as many 7ft beds where generous coverage is preferred.

Caesar Duvets

At 320 × 235cm, our Caesar duvets are designed for very large 8ft beds. Their extra width provides considerably more coverage than an Emperor or Super King duvet and keeps the bedding in proportion with an oversized mattress.

Standard or Specialist Duvet Size?

Most high-street duvet ranges stop at Super King. That can leave owners of non-standard beds choosing between a duvet that is too narrow and one that is unnecessarily large.

Victoria Linen specialises in unusual bed sizes, which means you can choose a duvet made for the dimensions of the bed rather than simply settling for the nearest standard size.

This is particularly useful for:

• Long and extra-long single beds
• 3ft 6in large single beds
• 4ft small double and three-quarter beds
• Emperor and 7ft beds
• 8ft Caesar beds
• Other unusual and bespoke bed sizes

Choose Your Duvet Filling

Once you have found the correct size, the next decision is how you would like your duvet to feel.

Hollowfibre duvets offer soft, comfortable warmth without feather filling and are a practical choice for everyday bedding.

Duck feather & down duvets have a more traditional feel, combining soft down with supportive feather for comfortable natural insulation.

Goose down duvets provide excellent insulation while remaining relatively light. Higher down-content fillings are particularly suitable if you prefer warmth without a heavy duvet.

You can also shop duvets by filling if filling type is more important to you than bed size.

Choosing the Right Tog

Duvet size determines coverage; tog determines warmth. A larger duvet does not automatically need a higher tog.

Lightweight 2.5 and 4.5 tog duvets are useful during warmer weather, while 10.5 tog provides a versatile medium-weight option. Higher 13.5 and 15 tog duvets provide more insulation for colder bedrooms and winter use.

For greater flexibility, an All Seasons duvet combines separate lightweight duvets that can be used individually or together as temperatures change.

See our duvets by tog collection to compare warmth ratings.

Matching Your Duvet Cover to Your Duvet

Your duvet cover should match the dimensions of the duvet itself, not simply the stated mattress size.

This is especially important with specialist bedding. For example, our Emperor duvet measures approximately 290 × 235cm, so it should be paired with an Emperor duvet cover designed for the same dimensions.

If you are replacing an existing duvet or cover, check the dimensions on the care label or measure the item before ordering. Names such as Emperor, Large Emperor and Caesar are not completely standardised across every bedding manufacturer.

Why Choose Victoria Linen for Specialist Duvet Sizes?

• Standard and hard-to-find sizes from Single through to oversized Emperor and Caesar duvets.
• UK manufactured duvets with a choice of quality fillings.
• Multiple tog ratings for summer, winter and year-round use.
• Natural and synthetic fillings including hollowfibre, feather and premium down.
• Matching duvet covers available in specialist dimensions.
• Non-standard bedding expertise if you need help finding the correct size.

If you cannot find the duvet size you require, contact us with your measurements and our team can advise on the most suitable option.

Frequently Asked Questions

What are the standard UK duvet sizes?

Common UK duvet sizes are approximately 135 × 200cm for Single, 200 × 200cm for Double, 230 × 220cm for King and 260 × 220cm for Super King. Specialist sizes are also available for beds that fall between or beyond these standard dimensions.

What size duvet do I need for a 4ft small double bed?

Our Small Double duvet measures 184 × 220cm and is specifically designed for a 4ft or three-quarter bed. It provides more coverage than a Single duvet without the unnecessary width of a standard Double.

What size duvet do I need for a long single bed?

Our Long Single duvet measures approximately 135 × 220cm. It has the same general width as a Single duvet but provides an additional 20cm of length for longer mattresses.

What size duvet fits a 3ft 6in large single bed?

A Large Single duvet measuring approximately 150–152 × 220cm provides additional width and length for a 3ft 6in mattress while remaining better proportioned than a standard Double duvet.

What size is an Emperor duvet?

Our Emperor duvet measures approximately 290 × 235cm. It is designed for oversized beds including standard 200 × 200cm Emperor mattresses and can also provide generous coverage on many 7ft beds.

What size is a Caesar duvet?

Our Caesar duvet measures 320 × 235cm and is designed for large 8ft beds. It provides considerably more width than a standard Super King or Emperor duvet.

Can I put a larger duvet on a smaller bed?

Yes. Some people deliberately choose a larger duvet for additional side coverage, particularly when two people share a bed. Bear in mind that a significantly oversized duvet will have a deeper drop at the sides and will require a duvet cover of the same dimensions.

Should my duvet cover be the same size as my duvet?

Yes. For the best fit, your duvet cover should closely match the dimensions of the duvet. A cover that is too large can allow the duvet to move around, while a cover that is too small can compress or bunch the filling.

Do you sell duvets for unusual bed sizes?

Yes. Victoria Linen specialises in standard and non-standard bedding sizes, including Long Single, Large Single, Small Double, Emperor and Caesar. If you cannot find the dimensions you require online, contact us with your measurements.