I get this question almost every week: "I bought a bed frame from an overseas website, why doesn't my mattress fit?" The answer is almost always the same — Singapore mattress sizes aren't the same as UK, US, or Australian sizes, and the gap is usually just big enough to ruin the fit without being obvious from a quick glance.
I'm Jacq, founder of Sleep Space. Over the years I've heard this grievance countless times, for everyone from HDB families to expats bringing furniture in from three different countries. The pattern is always the same: people get the width roughly right and then discover, mattress in hand, that the length is off by ten centimetres. So here's the actual reference — the real numbers, in centimetres, so you can check before you buy instead of after.
Standard Singapore mattress dimensions
These are the four sizes the local bedding industry builds around, and what you'll find on every standard bed frame sold in Singapore.
| Size | Dimensions (cm) |
|---|---|
| Single | 91 x 190 |
| Super Single | 107 x 190 |
| Queen | 152 x 190 |
| King | 182 x 190 |
Why this trips people up
I think about mattress fit the same way I think about body alignment in a Pilates session — small gaps compound. A mattress that's even a few centimetres short for its frame doesn't just look odd, it changes how you actually rest. The edges lose support, you unconsciously shift toward the centre of the bed to avoid the gap, and over months that uneven weight distribution wears the mattress unevenly too. It's a structural problem before it's ever a comfort problem.
UK and European size comparisons
The UK and Europe generally favour 200 cm in length, against our local 190 cm standard.
UK King (150 x 200 cm). The width is close enough to a Singapore Queen that it's easy to assume they match. They don't — the extra 10 cm in length means a local Queen mattress will leave a noticeable gap at the foot of a UK King frame.
Euro Single (90 x 200 cm). Slightly narrower than our local Single, but longer — another case where the width looks right and the length doesn't.
US and Australian standards
North American and Australian sizing introduces its own variations, and these come up often enough at Sleep Space that I keep the conversions on hand.
US Single (96 x 190 cm). Close to our local Single in length, but narrower in width — a smaller mismatch than most international comparisons, but still enough to leave a gap along one side.
US Queen (152 x 203 cm). Same width as our local Queen, but 13 cm longer. This is one of the more common mismatches I see from clients with US bed frames.
Australian Queen (152 x 203 cm). Same as the US Queen, with the same length mismatch against our local standard.
US King (193 x 203 cm). Both wider and longer than our Singapore King — the biggest standard size you're likely to encounter, and one that needs a genuinely custom mattress rather than a "close enough" substitute.
Custom mattress solutions
If your frame doesn't match any standard size — local or international — you don't need to compromise on fit. At Sleep Space, I offer a custom service where we build mattresses to your exact dimensions in centimetres. The brands I work with can all produce custom-sized units without losing the orthopedic support and construction quality of their standard models.
Frequently asked questions
A final thought
Mattress size is one of those decisions that's easy to get approximately right and quietly wrong. The centimetres that don't matter when you're scrolling a listing online are exactly the centimetres that matter once the mattress is actually in your room. Measure first, ask if you're unsure, and don't assume "close enough" sizing will behave the way a proper fit does.
Jacq is the founder of Sleep Space and a Pilates educator with over 28 years of experience in Singapore. Move well. Sleep well. Live well.
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