Dimensions / Furniture / Mattresses / Twin
A US twin mattress is 38 × 75 in (97 × 191 cm), the smallest standard size. A twin XL is the same width and 13 cm (5 in) longer, 203 cm (80 in), for sleepers over 6 ft. The nearest UK size, a single, is 90 × 190 cm.
| Width | Length | Twin XL length |
|---|---|---|
| 97cm38 in | 191cm75 in | 203cm80 in |
Sources: Sleep Foundation. Checked October 2026.
Enter the room and who will sleep in it. With a twin, the third check matters most: at 191 cm it is a short size.
All in centimetres. 1 in = 2.54 cm.
It leaves 76.5 cm at each side and 89 cm at the foot, and 61 cm is enough to walk.
Measured from the mattress. In a small room a twin can also go against a side wall.
The bed and two 46 cm nightstands, 8 cm from it, take 205 cm of your 250 cm wall.
A twin is usually paired with a 46–53 cm (18–21 in) nightstand.
170 cm is under 183 cm (6 ft), so a 191 cm mattress is long enough.
Over 6 ft (183 cm), a twin XL gives the extra 13 cm at the same width.
Furnishing a child’s room or a dorm? Photograph the room, mark the walls in SizeMarker and check the gaps before you order.
Mark a photoWidth × length. A UK or EU single is not the same as a US twin.
| Size | Width | Length |
|---|---|---|
| Twin (US)This page | 97 cm38 in | 191 cm75 in |
| Twin XL (US)13 cm (5 in) longer | 97 cm38 in | 203 cm80 in |
| Full (US) | 137 cm54 in | 191 cm75 in |
| Queen (US) | 152 cm60 in | 203 cm80 in |
| UK singleNarrower than a US twin | 90 cm3 ft | 190 cm6 ft 3 in |
| UK small singleFor children from about 4 | 75 cm2 ft 6 in | 190 cm6 ft 3 in |
| EU single | 90 cm | 200 cm |
| EU small single | 75 cm | 200 cm |
Sources: Sleep Foundation · Dreams
Who it suits, the space around it and the nightstand beside it.
| Measurement | Size |
|---|---|
| Sleeper height a 191 cm twin suitsTaller sleepers: twin XL | under 183 cmunder 6 ft |
| Space at the foot and each side | 61 cm24 in |
| Nightstand width for a twin | 46–53 cm18–21 in |
| Gap between bed and nightstand | 8 cm3 in |
| Two twins side by sideThe width of a king | 193 cm76 in |
| Floor with 61 cm at both sides and the foot(97 + 122) × (191 + 61) | 219 × 252 cm86 × 99 in |
Sources: Sleep Foundation (twin) · Sleep Foundation (queen) · Tidbits & Twine
38 × 75 in (97 × 191 cm) in the US, the smallest standard bed size. A twin XL is the same width and 80 in (203 cm) long.
Children, teenagers and adults under 6 ft (183 cm) who sleep alone, according to Sleep Foundation.
If you are over 6 ft (183 cm), a twin XL: it is 13 cm (5 in) longer, 203 cm (80 in), at the same 97 cm (38 in) width.
It is the size most likely to: in a smaller bedroom, a twin or twin XL may be the only size that fits. With 61 cm (24 in) at both sides and the foot it needs about 219 × 252 cm (86 × 99 in).
Close, but narrower: a UK single is 90 × 190 cm against 97 × 191 cm. For young children the UK also has a small single, 75 × 190 cm.
Twins sell to families, dorms and hotels, and buyers mix up twin, twin XL and single. Mark the actual width and length on your own mattress photo in SizeMarker, as in the picture at the top, and send one product card for WhatsApp or WeChat.
