IKEA Mattress Size vs UK Size: What Is the Difference?

Buying a new mattress should be simple, but mattress sizing can become confusing when an IKEA bed frame is matched with a mattress from another furniture retailer.

Although the products may both be labelled “Single”, “Super Single”, “Queen” or “King”, their actual measurements may be different. A mattress that is only a few centimetres wider, narrower or longer than the bed frame may not fit correctly.

This guide compares the IKEA mattress sizes commonly sold in Singapore with the UK-style or standard Singapore mattress sizes offered by many local retailers.

Quick Comparison: IKEA Size vs UK/Singapore Size

Many IKEA Singapore mattresses and matching bed frames are available in 90 × 200 cm, 120 × 200 cm, 150 × 200 cm and 180 × 200 cm dimensions.

The commonly used standard Singapore dimensions are approximately 91 × 190 cm for Single, 107 × 190 cm for Super Single, 152 × 190 cm for Queen and 182–183 × 190 cm for King.

An Important Note About the Term “UK Size”

In Singapore, “UK size” is sometimes used to describe the traditional mattress dimensions adopted by many local furniture and mattress retailers. These dimensions are generally based on imperial measurements such as 3 feet, 3 feet 6 inches, 5 feet and 6 feet in width, with a standard length of approximately 6 feet 3 inches.

However, the naming system currently used in the United Kingdom is not exactly the same as Singapore’s:

For example, a 150 × 200 cm mattress is normally called a Queen by IKEA Singapore but a King in the UK. IKEA UK currently sells mattresses according to standard UK dimensions rather than the IKEA Singapore sizing convention.

Therefore, never rely only on size names such as “Queen” or “King”. Always check the exact width and length in centimetres.

What Is the Main Difference?

The most noticeable difference is the mattress length.

Most IKEA Singapore adult mattresses are approximately 200 cm long, while common Singapore-standard mattresses are approximately 190 cm long. This means an IKEA mattress is normally around 10 cm longer.

The width also varies according to the mattress category.

Single Size

An IKEA Single mattress commonly measures 90 × 200 cm, while a standard Singapore Single mattress measures approximately 91 × 190 cm.

The widths are almost the same, but the IKEA mattress is around 10 cm longer. Therefore, an IKEA Single mattress will usually be too long for a standard 91 × 190 cm Single bed frame.

Super Single Size

This category has the biggest width difference.

An IKEA Super Single mattress commonly measures 120 × 200 cm, while a standard Singapore Super Single mattress measures approximately 107 × 190 cm.

The IKEA version is approximately 13 cm wider and 10 cm longer. These two sizes should not be treated as interchangeable.

A 120 × 200 cm mattress will not fit correctly inside a standard 107 × 190 cm Super Single bed frame.

Queen Size

An IKEA Queen mattress commonly measures 150 × 200 cm, while a standard Singapore Queen mattress measures approximately 152 × 190 cm.

The standard Singapore mattress is slightly wider, but the IKEA mattress is approximately 10 cm longer.

Although the width difference appears small, the length difference is significant enough to prevent a proper fit.

King Size

An IKEA King mattress commonly measures 180 × 200 cm, while a standard Singapore King mattress measures approximately 183 × 190 cm.

The standard Singapore King is slightly wider, while the IKEA King is longer. A mattress made for one system may either extend beyond the bed frame or leave an unwanted gap.

Will an IKEA Mattress Fit a UK-Size Bed Frame?

In most cases, it will not fit properly.

For example, placing a 90 × 200 cm IKEA mattress into a 91 × 190 cm standard Single frame means the mattress is approximately 10 cm too long. It may bend, press against the headboard and footboard, or fail to sit flat.

The size difference is even greater for Super Single mattresses. An IKEA 120 × 200 cm mattress is substantially wider and longer than a standard 107 × 190 cm Super Single frame.

Do not force an oversized mattress into a smaller frame. Compressing or bending the mattress edges may affect its shape, comfort and long-term durability.

Will a Standard Mattress Fit an IKEA Bed Frame?

A standard Singapore mattress may physically sit inside some IKEA bed frames, but it will normally leave gaps.

For example, placing a 152 × 190 cm Singapore Queen mattress on a 150 × 200 cm IKEA Queen frame creates two possible problems:

1. The mattress may be slightly too wide for the intended sleeping platform.

2. It will be approximately 10 cm shorter, leaving a visible gap near the headboard or footboard.

A mattress that moves around inside the frame can also make the sleeping surface feel less stable.

The best solution is always to match the mattress dimensions exactly with the bed frame’s recommended mattress size.

What About Bedsheets and Mattress Protectors?

Mattress accessories are also size-specific.

A fitted sheet designed for a 152 × 190 cm Queen mattress may not fit a 150 × 200 cm IKEA mattress properly. It may be too short, difficult to stretch over the corners or loose along the sides.

The same applies to:

• Mattress protectors

• Mattress toppers

• Fitted bedsheets

• Divan bases

• Storage bed platforms

• Bunk bed mattresses

• Pull-out bed mattresses

Besides width and length, check the mattress thickness before buying a fitted sheet or protector. A deep mattress may require a fitted sheet with a deeper pocket.

How to Measure Your Existing Bed Frame

Before ordering a replacement mattress, measure the inside sleeping area of the bed frame rather than its total external dimensions.

Follow these steps:

1. Remove the existing mattress.

2. Measure the internal width from one side of the sleeping platform to the other.

3. Measure the internal length from the headboard end to the footboard end.

4. Check whether the frame has raised borders that restrict the mattress size.

5. Record the dimensions in centimetres.

6. Compare the measurements with the mattress specifications before ordering.

Do not measure only the outside of the bed frame. Headboards, side panels, storage compartments and upholstery can make the external dimensions considerably larger than the mattress area.

Which Mattress Size Should You Choose?

Choose an IKEA-size mattress when:

• You already own an IKEA bed frame.

• The frame specifies a 90 × 200, 120 × 200, 150 × 200 or 180 × 200 cm mattress.

• You prefer a longer 200 cm sleeping surface.

• You plan to buy matching IKEA bedsheets and protectors.

Choose a standard Singapore-size mattress when:

• You own a bed frame purchased from a local furniture retailer.

• Your frame uses 91 × 190, 107 × 190, 152 × 190 or 183 × 190 cm dimensions.

• You want a wider selection of compatible local bed frames and bedding.

• You may replace the mattress or bed frame separately in the future.

Neither sizing system is automatically better. The correct choice depends on the exact dimensions of your bed frame, available bedroom space and preferred sleeping area.

Frequently Asked Questions

Are IKEA and standard Single mattresses the same size?

No. Their widths are similar, but an IKEA Single mattress is commonly 200 cm long, while a standard Singapore Single mattress is approximately 190 cm long.

Is an IKEA Super Single the same as a Singapore Super Single?

No. An IKEA Super Single commonly measures 120 × 200 cm, while a standard Singapore Super Single is approximately 107 × 190 cm. The difference is substantial.

Is an IKEA Queen the same as a Singapore Queen?

No. An IKEA Queen is commonly 150 × 200 cm, while a standard Singapore Queen is approximately 152 × 190 cm.

Can I use a standard Queen mattress on an IKEA Queen bed frame?

It is not recommended unless the frame’s specifications confirm compatibility. The mattress may be slightly wider and approximately 10 cm shorter than the intended IKEA mattress.

Does every IKEA mattress have the same sizing system?

No. Product sizes and availability can vary according to the model and country. IKEA UK, for example, currently uses standard UK mattress dimensions. Always check the measurements shown on the specific Singapore product page before purchasing.

Final Mattress-Buying Tip

The size name printed on the product listing is not enough.

Before ordering any mattress, bed frame, fitted sheet or mattress protector, compare the exact measurements in centimetres. A “Queen” from one retailer may not have the same dimensions as a “Queen” from another retailer.

At Lulu Furniture, our mattress and bed-frame listings show the available dimensions so that customers can select the correct combination. When replacing only the mattress or only the bed frame, measure your existing furniture carefully before placing your order.

Matching the correct mattress with the correct bed frame will give you a neater appearance, better stability and a more comfortable sleeping setup.

Explore our mattress collection here.