Double vs Queen Mattress: What’s the Difference? (2026)

You are browsing mattresses online and the size list throws up Double, Full and Queen, sometimes all at once. Are Double and Full the same thing? Is a Queen just a fancier Double? And why does almost every showroom in Singapore push Queen while Double barely gets a mention? The confusion is real, and it trips up plenty of first-time buyers. Here is exactly what separates these sizes and why one of them has quietly become the local default.

Double and Full are the same size

Let’s clear up the first knot straight away. Double and Full are two names for one size. Full is the American term, Double is the British and Commonwealth term, and you will see both on listings sold in Singapore. Neither is a bigger version of the other. If a page lists Full/Double together, that is one size, not two.

A Double, or Full, measures roughly 137 x 190 cm (54 x 75 in). The name is a hangover from the days when it replaced a single bed as the standard for one adult who wanted more room, or two people who did not mind being close. In modern terms, calling it a Double oversells it slightly for couples.

Queen versus Double: the numbers

A Queen mattress in Singapore is about 152 x 190 cm (60 x 75 in). Set the two side by side and a Queen is around 15 cm (6 in) wider than a Double. Both are typically 190 cm long here, though some older or imported Double frames run a little shorter, which can leave taller sleepers with their feet at the edge.

Fifteen centimetres may not sound like much, but split between two people it is the difference between elbows touching and a little breathing room. On a Double each person gets about 68 cm (27 in), which is less than a Single bed each. On a Queen each person gets about 76 cm (30 in). For a full look at how every local size compares, see our mattress size guide for Singapore.

Why Queen is the Singapore default

Walk into any local mattress showroom and Queen dominates the floor. There is a practical reason. For a small step up in price and floor space over a Double, a Queen gives couples meaningfully more room, and it still fits comfortably in most HDB master bedrooms. That sweet spot made it the standard, and once a size becomes the standard, everything else follows: frames, mattresses, protectors and bedding all cluster around it.

The result is a self-reinforcing loop. Because Queen sells, retailers stock it deep, which makes it easy to buy, which makes more people choose it. Double never gained the same momentum here, so it sits on the margins of the market.

It helps to see where each size sits in the wider local range. A Single is about 91 cm wide and a Super Single about 107 cm, both aimed at one sleeper. Double at 137 cm is the awkward in-between size, wider than a Super Single but narrower than a Queen. Because Queen only costs a little more and delivers noticeably more room for two, most couples simply skip past Double entirely. That leaves Double stranded: too wide to be a compact single-sleeper bed, too narrow to be the obvious couple’s choice.

Where Double still shows up

Double has not vanished entirely. You will still meet it in a few places. Older bed frames, especially inherited or second-hand ones, were sometimes made in Double sizing. Some imported furniture, particularly flat-pack pieces designed for overseas markets, comes in Full/Double. A handful of retailers and hotel-surplus sellers also carry it.

If you own a Double frame already, you are not stuck, you just need a Double mattress to fit it, and you should measure the internal frame dimensions carefully before buying. Trying to squeeze a Queen mattress into a Double frame will not work; it will overhang and sit unsupported. If you are shopping for a new frame anyway, our guide on how to choose a bed frame walks through the fit.

Bedding: the deciding factor for many

Here is where Double really loses ground in Singapore. Bedding availability. Queen fitted sheets, quilt covers, protectors and toppers are stocked everywhere, in every fabric and price band. Double bedding is far patchier. You may find a limited range, pay more for less choice, or end up ordering online and waiting.

Over the life of a mattress you will buy many sets of sheets, so easy, affordable replacements matter. Do not be tempted to put Queen sheets on a Double either; they will be loose and slide off through the night. Match your sheets to your actual mattress size. Our guide to bedsheets for Singapore’s humidity is worth a read whichever size you land on.

Who each size suits

A Double makes sense if you already own a Double frame, if you are furnishing a small room for one adult who wants generous space, or if you are kitting out a guest room or a rental where the bed is used occasionally. It is a fine size for a single sleeper and workable for an occasional couple.

A Queen is the better pick for most couples and for anyone buying new. It suits a typical HDB master bedroom, gives two adults comfortable width, matches the widest range of affordable bedding, and holds its resale and replacement value simply because it is the standard. If you sleep alone but love to spread out, a Queen is a lovely, easy-to-dress choice too.

What about going bigger?

If a Queen feels like it might still be too snug, the next step up is a King at about 182 x 190 cm (72 x 75 in), which adds another 30 cm of width over a Queen. That is a bigger jump and needs a larger room. We compare them in detail in our King versus Queen guide. For most Singapore homes, though, the real contest is Double versus Queen, and Queen usually wins on space, availability and long-term convenience.

The bottom line

Double and Full are the same size, about 137 cm wide, and a Queen at 152 cm gives you around 15 cm more width plus reliably full length. In Singapore, Double is the uncommon option that mostly appears on older or imported frames, while Queen is the default that every retailer stocks and every bedding range fits. Unless you already own a Double frame or are furnishing a small single-sleeper or guest room, Queen is almost always the smarter buy: more comfortable for two, easier to dress, and simpler to replace. Measure your frame, match your sheets, and when you are planning the rest of the room, the wider furniture guides can help you finish the space.