Choosing a mattress is much easier when you ignore names such as “double”, “queen” and “king” for a moment and concentrate on the actual width.
At Four Day Clearance, beds and mattresses are organised into 3ft, 3.5ft, 5ft, 5.5ft and 6ft sizes, making it easier to match the bed frame with the correct mattress.
As a quick guide:
| FDC size | Approximate width | Typical use |
| 3ft | 90 cm | Single sleeper |
| 3.5ft | 105 cm | Wider single |
| 5ft | 150 cm | Two sleepers |
| 5.5ft | 160 cm | Larger double / EU queen-size width |
| 6ft | 180 cm | Large double / king-size width |
These widths are a useful starting point. Always check the exact dimensions stated on the individual bed and mattress before ordering, as overall frame dimensions and mattress specifications can differ.
What size is a 3ft bed?
A 3ft bed is approximately 90 cm wide and is normally designed for one person.
It is a practical choice for:
- Children’s bedrooms
- Teenagers
- Guest bedrooms
- Smaller bedrooms
- Rooms where additional floor space is important
Browse 3ft beds and matching 3ft mattresses.
Remember that the overall bed frame is normally wider and longer than the mattress itself, so use the bed’s complete product dimensions when measuring the room.
What size is a 3.5ft bed?
A 3.5ft mattress is approximately 105 cm wide.
It gives a single sleeper additional width without taking up as much room as a bed designed for two people.
This can make it useful for:
- Teenagers
- Adults sleeping alone
- Guest bedrooms
- Rooms where a 3ft bed feels too narrow
Browse 3.5ft beds και 3.5ft mattresses.
What size is a 5ft bed?
A 5ft bed is approximately 150 cm wide at mattress level.
This is a common choice for two sleepers when bedroom space is limited but comfortable shared sleeping space is still important.
Browse 5ft beds together with 5ft mattresses.
Before choosing one, measure the space remaining on both sides of the bed. Ideally, the layout should still allow practical access to wardrobes, doors and bedside furniture.
What size is a 5.5ft bed?
A 5.5ft mattress is approximately 160 cm wide.
This width is often associated with European queen-size beds and gives two sleepers more room than a 150 cm mattress.
Browse 5.5ft beds και 5.5ft mattresses.
A 160 cm bed can be a good middle ground when you want more sleeping space but do not have sufficient room for a 180 cm mattress.
What size is a 6ft bed?
A 6ft mattress is approximately 180 cm wide.
It provides substantial sleeping width for two people, but it also requires more bedroom space.
Browse 6ft beds and matching 6ft mattresses.
Before buying, consider the complete room layout rather than just whether the bed physically fits.
A very large bed in a small room can reduce access to wardrobes, drawers and bedside tables.
Which bed size should I choose?
Start with three questions:
1. How many people will normally sleep in the bed?
For one person, 3ft or 3.5ft may be sufficient.
For two adults, the 5ft, 5.5ft and 6ft categories provide progressively more width.
2. How large is the bedroom?
Measure the bedroom before deciding.
Do not forget:
- Wardrobe doors
- Bedroom doors
- Drawers
- Bedside tables
- Windows
- Radiators or other fixed items
The largest bed you can physically squeeze into a room is not necessarily the best bed for the room.
3. What mattress width do you already have?
If you are replacing only the frame or only the mattress, check the dimensions of what you already own.
Do not choose solely based on names such as “double” or “king”. Measure the actual width and length in centimetres.
Bed size versus bed frame size
This is an important distinction.
A mattress measurement describes the mattress.
A bed-frame measurement includes the complete structure around it.
For example, a frame designed for a 160 cm mattress may be wider than 160 cm because of:
- Upholstered sides
- Wooden rails
- Headboard width
- Footboard design
- Storage structure
When deciding whether a bed will fit into your bedroom, use the overall dimensions of the bed, not only the mattress size.
How do I choose the right type of mattress?
Size is only one part of the decision.
Within the mattress range, you may find different constructions such as spring, pocket-spring, foam, memory-foam and combination mattresses.
Rather than assuming one construction is automatically best, compare the individual product specifications and consider:
- Preferred feel
- Mattress construction
- Sleeping position
- Whether one or two people will use it
- Bed-frame compatibility
- Budget
Comfort is personal, so specifications are more useful than broad labels such as “best mattress”.
Don’t forget the rest of the bedroom
Once you know the correct bed size, plan the furniture around it.
Useful complementary categories include:
- Bedside tables
- Wardrobes
- Chest of drawers
- Bed sheets and pillow cases
- Mattress and pillow protectors
Planning these pieces together can prevent a large bed from leaving insufficient space for essential storage.
Which mattress size is right for me?
For a quick decision:
Choose 3ft if you need a compact single bed.
Choose 3.5ft if you want a wider single bed.
Choose 5ft if two people need a practical shared bed without moving to the largest sizes.
Choose 5.5ft if you want approximately 160 cm of sleeping width.
Choose 6ft if you want approximately 180 cm of sleeping width and have enough bedroom space.
You can compare all current options in Κρεβάτια και Στρώματα.
Frequently Asked Questions
What is a 5ft mattress in centimetres?
A 5ft mattress in the Four Day Clearance sizing structure is approximately 150 cm wide. Check the product page for the complete mattress dimensions.
What is a 5.5ft mattress in centimetres?
Approximately 160 cm wide.
What is a 6ft mattress in centimetres?
Approximately 180 cm wide.
Should the mattress and bed be the same size?
They need to be compatible. A bed designed for a particular mattress width should be paired with the appropriate mattress size. Always check both products’ exact specifications before buying.
Should I measure the mattress or the complete bed?
Use mattress dimensions when matching a mattress to a bed. Use the complete outer dimensions of the bed frame when checking whether it fits your room.
