A foldable sofa cum bed opens by unfolding its seat and back into a flat bed, with no heavy frame to pull out. Most are foam blocks hinged together, a light metal futon frame, or a chair that folds out into a single bed.
A sofa cum bed, foldable in this way, suits rented flats, hostels and rooms that change use through the day. They weigh less, move easily and cost less than a framed sofa cum bed. The trade off is comfort: the foam is the mattress, so foam quality decides everything.
Read the mechanism table first, then see the designs. For sturdier framed models go to sofa cum bed designs, and for metal frames see metal sofa cum bed.
Foldable Sofa Cum Bed Mechanisms Compared
| Type | How it opens | Open size | Weight |
|---|---|---|---|
| 3 fold foam | Three foam blocks unfold in a Z | 3x6 to 5x6 | Light |
| Futon frame | Metal or wood back drops flat | 4x6 to 5x6 | Medium |
| Sofa chair cum bed | Seat pulls out in two or three panels | 2.5x6 to 3x6 | Light |
| Pull out | Hidden frame slides forward | 4x6 to 6x6 | Heavy |
| Air sofa cum bed | Inflates with a pump, folds flat | 3x6 to 4x6 | Very light |
Folding Sofa Cum Bed for Daily or Guest Use
For a bed used every night, choose a 3 fold or futon model with HR blocks rated 35 to 40 kg/m³, 6 inches thick or more. A soft 24 kg/m³ foam will sink in the middle within months.
For guests a few nights a month, a lighter model works. An air sofa cum bed is handy for a hostel or a terrace sleepover but punctures easily and feels warm in summer.
- Pick a cover with a zip on three sides so you can wash it.
- Stand the foam on its side in the sun once a month to dry out sweat and damp.
3 Fold Sofa Cum Bed and Foam Folding Designs
A 3 fold sofa cum bed is three thick foam blocks in one cover. Fold them into a Z and you have a low sofa; flatten them and you have a mattress.
- Seats
- 3 seats, opens 4x6
- Build
- HR foam, grey knit
- Fits
- Rented flat
Three blocks of HR foam with a zip cover. Folded it is a low 3 seater; open it gives a 4x6 floor bed. Light enough for one person to move.
Maker's note: Specify HR foam at 35 kg/m³ plus a cover whose base grips the floor.
- Seats
- 2 to 3 seats, 3x6
- Build
- PU foam, mustard drill
- Fits
- Study room
A floor level sofa cum bed 3 fold design with a raised back block. It doubles as reading seating in a study and a bed for a guest.
Maker's note: Seat foam at least 5 inches thick; anything thinner lets you feel the floor.
- Seats
- 3 seats, opens 5x6
- Build
- HR foam, navy cotton
- Fits
- Guest room
This 3 seater folding sofa bed has foam arms that come off and become pillows when the bed is open.
Maker's note: Check the cover zip runs on three sides so the cover comes off without bending the foam.
Futon and Pull Out Folding Sofa Bed Design
A futon puts a thick mattress on a hinged frame. The back drops flat with a click. Pull out models hide the frame under the seat and roll forward.
- Seats
- 3 seats, opens 4x6
- Build
- Steel, charcoal futon
- Fits
- Studio flat
A black powder coated futon frame with a 6 inch mattress. The back has three positions: upright, recline and flat.
Maker's note: Ask for a ribbed steel deck, not a flat sheet, so the mattress can breathe.
- Seats
- 3 seats, opens 4x6
- Build
- Pine, cream cotton
- Fits
- 10 x 11 ft room
A wooden futon with a cream mattress tied at the corners. Simple to repair; a local carpenter can replace slats.
Maker's note: Treat pine against borers and ask for slats under 2 inches apart.
- Seats
- 3 seats, opens 5x6
- Build
- Ply, teal weave
- Fits
- 11 x 12 ft hall
Not strictly a fold, but the pull out sofa cum bed belongs here because it is the most common foldaway style for daily use.
Maker's note: Ask how many steps it takes to open; two or three is normal, more is fiddly.
Sofa Chair Cum Bed, Recliner and Bunk Options
One person rooms need a chair that becomes a single bed. Kids rooms and hostels can use a sofa cum bunk bed that gives two sleeping spots.
- Seats
- 1 seat, opens 2.5x6
- Build
- HR foam, rust velvet
- Fits
- Bedroom corner
A sofa chair cum bed about 3 ft wide. The seat pulls out in two panels to give a 2.5x6 bed for one.
Maker's note: Panels must line up level; ask the seller to open it in front of you.
- Seats
- 1 to 2 seats
- Build
- Steel, brown fabric
- Fits
- Parents room
A recliner sofa cum bed goes flat when the foot rest rises and the back drops. Good for an older parent who likes to nap without going to bed.
Maker's note: Choose a wall hugger mechanism so it reclines with only a few inches from the wall.
- Seats
- 2 to 3 sleep
- Build
- Steel, blue cotton
- Fits
- Kids room
Sofa below, single bunk above. The lower sofa back drops to make a second bed, so it sleeps up to three in a kids room.
Maker's note: The upper guard rail should rise 5 inches or more over the mattress top.
Questions buyers ask
Is a foldable sofa cum bed good for daily sleeping?
Yes, provided the blocks are HR foam in the 35 to 40 kg/m³ band and no thinner than 6 inches. Cheaper soft foam sinks quickly. Flip and air the foam every few weeks.
What is a 3 fold sofa cum bed?
It is three foam blocks joined in one cover. Folded in a Z it sits like a low sofa; laid flat it becomes a mattress. It needs no frame.
Which is better, a folding bed cum sofa or a pull out sofa cum bed?
A folding model is lighter, cheaper and easier to move. A pull out sofa cum bed looks like a normal sofa and is better for daily use in the hall. Pick by how often you sleep on it.
Is an air sofa cum bed worth buying?
It is useful for a spare sleeping spot that packs away. It can puncture and feels warm in summer. For regular use a foam or futon model is more reliable.
How much space does a sofa cum bunk bed need?
Floor space is like a single bed, about 3 x 6.5 ft. Ceiling height matters more: you want at least 3 ft between the top mattress and the ceiling fan.
What decides the cost of a folding sofa bed design?
Foam density and thickness, cover fabric, a metal or wood frame and recliner mechanisms raise the cost. A simple 3 fold foam model is the most affordable. For more sizes see sofa cum bed size.