If you’re shopping for a bed in Ireland and coming from the United States, there’s one thing that tends to trip people up: that familiar ‘full size’ you know at home is called a double here, and its dimensions are just slightly different. The Irish double bed measures 135 cm wide by 190 cm long, compared to the US full at 137 cm by 191 cm — close enough that you might get away with using the same mattress, but not identical.

4 related posts

Single bed (3’0″): 90 cm x 190 cm · Small double (4’0″): 120 cm x 190 cm · Double bed (4’6″): 135 cm x 190 cm · King bed (5’0″): 150 cm x 200 cm

Quick snapshot

1Confirmed facts
2What’s unclear
  • US ‘full size’ and Irish ‘double’ are nearly identical but not interchangeable — a US full mattress may not fit an Irish double frame perfectly without slight bunching (Bed in a Box comparison)
  • Queen size is not standard in Ireland; retailers may use different widths (153–160 cm) (The Sleep Shop Ireland)
3Timeline signal
  • Irish bed sizes have followed UK conventions since the 1950s, with 190 cm length becoming standard for single/double (Wikipedia ‘Bed size’)
  • King (5ft wide) emerged in the 1970s as home sizes grew; 200 cm length is now the norm (DFI Beds)
4What’s next

All Irish bed sizes are summarised in the table below for quick reference.

Complete Irish bed size specifications
Irish bed size Width (cm) Length (cm) US equivalent UK equivalent
Single (3’0″) 90 190 Twin (99×191 cm) Single (90×190 cm)
Small double (4’0″) 120 190 — Small double (120×190 cm)
Double (4’6″) 135 190 Full (137×191 cm) Double (135×190 cm)
King (5’0″) 150 200 Queen (152×203 cm) King (152×198 cm)
Super king (6’0″) 180 200 King (193×203 cm) Super king (183×198 cm)
Key facts about Irish bed sizes
Label Value
Most common bed size in Ireland Double (135 × 190 cm)
Length variation 190 cm for most; king/queen 200-203 cm
US full size equivalent 137 × 191 cm – nearly identical to Irish double
Width of a 4ft bed 120 cm

What Are the Standard Bed Sizes in Ireland?

The simplest answer: Ireland follows the UK system, with lengths typically 190 cm for single, small double, and double, and 200 cm for king and super king. Here is a breakdown of each standard size.

Single bed dimensions

A standard Irish single bed measures 90 cm wide × 190 cm long (3 feet × 6 feet 3 inches). That’s 6 cm narrower than a US twin bed (which is 99 cm wide), according to Dochara’s bed size comparison. IKEA Ireland lists the same dimensions for its single mattress range.

  • Width: 90 cm (35.4 inches)
  • Length: 190 cm (74.8 inches)
  • Best for: One child, teenager, or single adult in a compact room

Small double bed dimensions

The small double (also called a 4ft bed) is 120 cm wide × 190 cm long. It bridges the gap between a single and a full double, offering extra width for one person or a cosy option for two in a small space. The Sleep Shop Ireland confirms these dimensions as standard.

  • Width: 120 cm (47.2 inches)
  • Length: 190 cm (74.8 inches)
  • Best for: One adult who wants more room, or two in a guest bedroom

Double bed dimensions

The standard Irish double bed is 135 cm × 190 cm (4 feet 6 inches × 6 feet 3 inches). This is the most common bed size in Irish homes and B&Bs. Caseys Furniture Ireland and IKEA Ireland both use the same specification.

  • Width: 135 cm (53.1 inches)
  • Length: 190 cm (74.8 inches)
  • Best for: Couples in bedrooms where a king is too large; also the typical bed in Irish B&B accommodation
The catch

The Irish double is only 2 cm narrower and 1 cm shorter than the US full size. That difference is small enough that a US full mattress may fit an Irish double frame with a little slack — but fitted sheets designed for one may not hug the other snugly. For expats, the safest option is to buy a new mattress in Ireland.

King bed dimensions

A king-size bed in Ireland measures 150 cm × 200 cm (5 feet × 6 feet 6 inches). DFI Beds notes that King is the most popular choice for master bedrooms. The extra 10 cm in length over a double makes a real difference for taller sleepers.

  • Width: 150 cm (59.1 inches)
  • Length: 200 cm (78.7 inches)
  • Best for: Couples who want space; also the accommodation standard in 4–5 star Irish hotels

Queen bed (rare) dimensions

Queen size is not a standard in Ireland. Some retailers import queen mattresses measuring roughly 153 cm × 203 cm (60 × 80 inches), similar to the US queen at 152 × 203 cm. The Sleep Shop Ireland mentions that queen beds are available but uncommon—most Irish buyers choose king instead.

  • Width: ~153 cm (60.2 inches)
  • Length: ~203 cm (79.9 inches)
  • Best for: Import buyers or those who want a size between double and king

Super king dimensions

The super king (6 feet wide) is 180 cm × 200 cm. Caseys Furniture Ireland lists it as the largest standard size, ideal for spacious master suites. Note that a US king (193 × 203 cm) is larger in both dimensions, so a US king mattress will not fit an Irish super king frame.

  • Width: 180 cm (70.9 inches)
  • Length: 200 cm (78.7 inches)
  • Best for: Large master bedrooms, especially in new-build homes
Bottom line: The pattern: Irish bed lengths stay at 190 cm for most sizes below king, then jump to 200 cm for larger beds. If you’re taller than 185 cm, consider a king or super king to avoid dangling feet.

What Is the Double Bed Size in cm in Ireland?

The double bed size in Ireland is exactly 135 cm wide × 190 cm long. That’s 4 feet 6 inches wide by 6 feet 3 inches long. Caseys Furniture Ireland and IKEA Ireland both confirm this as the national standard.

Double bed vs US full size comparison

Double (Ireland) vs US Full — side by side
Feature Irish Double US Full Size
Width 135 cm (53.1″) 137 cm (54″)
Length 190 cm (74.8″) 191 cm (75″)
Surface area 2.57 m² 2.62 m²
Common usage Couples, B&Bs (Ireland) Single adults, guest rooms (US)
Fitted sheet compatibility Standard 135×190 Standard 137×191

The two are nearly identical: the Irish double is 2 cm narrower and 1 cm shorter than the US full. Bed in a Box describes them as “functionally the same” for most sleepers, but warns that fitted sheets are not interchangeable. If you’re moving to Ireland with a US full mattress, you can use it on a double frame, but expect a slight overhang on the sides.

Conversion: 135 cm x 190 cm to inches

  • Width: 135 cm = 53.1 inches (4 ft 5.1 in)
  • Length: 190 cm = 74.8 inches (6 ft 2.8 in)

For unit conversion help, see our guide 30 Miles to KM: Calculator, Formula & Common Conversions — the same principles apply to converting bed dimensions.

Why this matters: For US expats, the double/full confusion is the most common source of buying mistakes. A ‘full’ mattress ordered from the US will be slightly too large for an Irish double frame, leading to bunching and reduced comfort.

What Is the Single Bed Size in cm in Ireland?

A standard Irish single bed is 90 cm wide × 190 cm long (3 feet × 6 feet 3 inches). IKEA Ireland and Caseys Furniture Ireland both cite this as the baseline size.

3ft single bed details

  • Width: 90 cm (35.4 inches)
  • Length: 190 cm (74.8 inches)
  • Mattress thickness: typically 15–25 cm

The Irish single is 6 cm narrower than a US twin (99 cm). As Dochara points out, this means a US twin fitted sheet will be loose on an Irish single mattress. Some retailers also offer a ‘small single’ measuring 75 cm × 190 cm, but this is rare and usually found in children’s furniture ranges. The official standard is 90×190.

The implication: If you’re buying bedding online from outside Ireland, always check that the fitted sheet pocket is designed for a 90×190 mattress. Many international brands default to twin (99×190) which won’t fit properly.

What Are the Dimensions of King and Queen Beds in Ireland?

Irish king beds are 150 cm × 200 cm; queen is uncommon and can vary. Here’s a detailed comparison with UK and US equivalents.

King bed size (5ft)

The standard Irish king measures 150 cm × 200 cm (5 feet × 6 feet 6 inches). DFI Beds confirms this as the most popular large size. The length of 200 cm is 10 cm longer than a double, giving taller sleepers room to stretch.

  • Width: 150 cm (59.1 inches)
  • Length: 200 cm (78.7 inches)
  • Area: 3.0 m² — 17% larger than a double

Queen bed size in Ireland (uncommon)

Queen beds are not a standard size in Ireland. Some specialty retailers sell queen mattresses measuring roughly 153 cm × 203 cm, similar to the US queen (152 × 203 cm). The Sleep Shop Ireland notes that because queen is non-standard, you may find width variations between 150 cm and 160 cm.

Comparison with UK/US sizes

King and queen sizes: Ireland vs UK vs US
Size Ireland (cm) UK (cm) US (cm)
King 150 × 200 152 × 198 193 × 203
Queen ~153 × 203 (rare) N/A 152 × 203
Super King 180 × 200 183 × 198 N/A

As Dochara explains, a US queen (152×203) is almost identical in width and length to an Irish king (150×200), so visitors from the US sometimes find Irish ‘king’ beds surprisingly similar to their queen at home. Conversely, a US king (193×203) is far larger than any standard Irish bed.

The trade-off: If you’re used to a US queen, an Irish king will feel very familiar. But if you require a US king, you will need to buy a super king from a specialist retailer or import.

“The most common bed size in Irish homes is the double (135×190 cm). Single beds are standard for children and guest rooms, while king-size is the preferred choice for master bedrooms.”

— DFI Beds size guide (source)
For more information, consult the escola tancada demà Irlanda guide. escola tancada demà Irlanda

How to Choose the Right Bed Size for Your Room

Selecting a bed size is about more than just the mattress — you need to consider room dimensions, door clearance, and your own height and sleeping habits.

Room size recommendations

  • Single (90×190): Minimum room 2.4 m × 2.4 m (8×8 ft)
  • Small double (120×190): Minimum room 2.7 m × 2.7 m (9×9 ft)
  • Double (135×190): Minimum room 3.0 m × 3.0 m (10×10 ft)
  • King (150×200): Minimum room 3.3 m × 3.3 m (11×11 ft)
  • Super king (180×200): Minimum room 3.6 m × 3.6 m (12×12 ft)

These recommendations ensure you can walk around the bed and open wardrobe doors. For additional bedroom maintenance tips, see our guide on How to Clean Baseboard Heaters — a handy skill for any bedroom upgrade.

Sleeping comfort considerations

  • If you’re taller than 183 cm (6 ft), choose a 200 cm length (king or super king) to avoid feet hanging off the end.
  • Couples who prefer personal space should consider a king (150 cm) or super king (180 cm). A double (135 cm) gives each person only 67.5 cm — less than a single bed.
  • Side sleepers who need extra room may find a small double (120 cm) sufficient for one person but narrow for two.

Buying tips for Ireland

  • Always measure doorways, hallway turns, and staircases before buying a large bed frame — king and super king frames may not fit up narrow Irish stairs.
  • Check mattress thickness: deep mattresses (25+ cm) require deep fitted sheets, which are widely available in Ireland but may be harder to find from UK-based brands.
  • Consider a divan base with storage — popular in Ireland for maximising small bedrooms.

What this means for expats: If you’re moving to an Irish apartment, the double (135×190) is the safest choice unless you have a master bedroom. King beds are common in newer builds but rare in older Georgian or Victorian houses with smaller rooms.

The upshot

US expats buying a bed in Ireland: stick with ‘double’ if you normally use a US full, and ‘king’ if you normally use a US queen. Avoid the temptation to import a US mattress — the slight dimensional differences and shipping costs make local purchase far more practical.

Confirmed Facts vs. What’s Still Unclear

Confirmed facts

  • Irish double bed dimensions are 135 cm × 190 cm (Caseys Furniture Ireland)
  • Single bed is 90 cm × 190 cm (IKEA Ireland)
  • King bed is 150 cm × 200 cm (DFI Beds)
  • 4ft bed (small double) is 120 cm × 190 cm (The Sleep Shop Ireland)

What’s unclear

  • Exact queen size may vary by retailer — some list 153 cm, others 160 cm (The Sleep Shop Ireland)
  • Whether ‘full size’ refers to US or Irish double can cause confusion for online shoppers (Bed in a Box)

Expert Quotes on Irish Bed Sizes

“Standard double bed — 135 cm wide x 190 cm long (4 ft 6 in x 6 ft 3 in). Most common size for couples.”

— DFI Beds mattress size guide (source)

“An Irish double bed (135×190) and a US full bed (137×191) are essentially the same sleeping surface, but the slight difference means you cannot swap fitted sheets between the two.”

— Bed in a Box comparison guide (source)

“The US queen bed (60″x80″ / 152×203 cm) is almost identical to the Irish king bed (5′x6′6″ / 150×200 cm).”

— Dochara travel & culture guide (source)

“Single beds in Ireland are exactly 90 cm wide, making them narrower than US twin beds by about 6 cm.”

— Mattress Mick size guide (quoted via Caseys Furniture Ireland)

The Irish bed size system is straightforward once you know the centimetre measurements: double = 135×190 (the most common), king = 150×200, single = 90×190. For US expats, the biggest trap is the double/full confusion — a US full mattress is 2 cm wider and 1 cm longer, so a new mattress bought in Ireland is the safer bet. For Irish homeowners, the double suits most rooms, but if you have the space and are over 183 cm tall, a king with its 200 cm length will cost more but pay off in comfort. For anyone shopping for bedroom furniture, the choice is clear: measure your room first, then pick the size that gives you at least 60 cm of walking space on each side.

Additional sources

discoveringireland.com

For a detailed comparison of full size bed dimensions across different regions, see this full size bed dimensions guide.

Don't miss these

Frequently asked questions

What is the most common bed size in Ireland?

The double bed (135 cm × 190 cm) is the most common size in Irish homes, B&Bs, and mid-range hotels.

Is a full size bed the same as a double bed?

In Ireland, a ‘full’ bed is called a double, but the Irish double (135×190 cm) is slightly smaller than the US full (137×191 cm). The difference is 2 cm in width and 1 cm in length.

What are the dimensions of a small double bed?

A small double (4ft bed) measures 120 cm × 190 cm. It’s often used in guest rooms or by solo adults who want more space than a single.

How long is a king bed in Ireland?

An Irish king bed is 200 cm long (6 feet 6 inches). The width is 150 cm (5 feet).

What is the width of a single bed in cm?

The standard single bed width in Ireland is 90 cm. That’s 3 feet or 35.4 inches.

Can I use a US full size mattress on an Irish double bed frame?

Yes, but with a slight overhang: the US full is 2 cm wider, so the mattress will protrude 1 cm on each side. The length difference (1 cm) is negligible. Fitted sheets designed for the US full will be loose on the Irish double.

What bed size is recommended for a 10 x 10 ft room?

A 10×10 ft room (3.05×3.05 m) can comfortably fit a double bed (135×190 cm) with walking space. A king may feel cramped unless the room is wider.

Where can I buy a queen size bed in Ireland?

Queen size is not a standard in Ireland. Some online retailers like The Sleep Shop Ireland and DFI Beds offer queen-sized options, but dimensions may vary. Check product specifications carefully before ordering.