Bed and headboard dimensions: UK sizes, heights and hotel conventions

At a glance

Millimetres. Sizes and tolerance are from the National Bed Federation; the two Approved Document M rows are from the England edition named in the notice; everything else is practice or an example value, to be confirmed with the partner workshop and the operator.

UK mattress sizes, and what they leave open

A bed in the UK is named and sized by its mattress. The National Bed Federation, the trade association for UK and Irish bed makers, lists six standard sizes on its consumer advice site, in feet and centimetres. The table gives them in millimetres, with the imperial size as the Federation prints it.

Three things the table does not settle. The base is not the mattress. A divan base is made to match its mattress size, and a headboard sold for a size is made to fit a divan of that size, but a frame, platform or bed with a surround is larger than its mattress, so ask for the overall size. Tolerance. The Federation says there is no legal standard on size tolerances for mattresses and divan bases in the UK, and that accepted industry practice is plus or minus 20 mm on the stated or advertised length and width. BS EN 1334:1996, which is titled as covering methods of measurement and recommended tolerances for domestic beds and mattresses, was not read, so no figure from it is quoted. Other markets. The Federation notes that in several European countries most people sleep in a 1,600 x 2,000 mm bed, which is not a UK size: an international brand standard may specify it.

Zip-and-link beds are two mattresses joined to make the stated size, so a super king can be one 1,800 mm mattress or two 900 mm mattresses linked; retail guides list super king and king sizes in 1,900 and 2,000 mm lengths. The hotel twin and the accessible room below build on this.

Heights: base, mattress and headboard

Heights are where specifications disagree, because they are quoted from different datums. Write each from the finished floor and say what it is. The mattress top is the base height plus the mattress thickness: a divan base 350 mm high with a 250 mm mattress gives 600 mm, and so does a platform on 150 mm legs with a 200 mm platform. The same mattress top is reached by two builds with different clear space under the bed, which matters for cleaning.

The headboard is measured two ways, and it pays to give both: its overall height from the floor (or from the bottom edge of a wall-hung panel) and its visible height above the mattress. Two UK retail guides read for this sheet put the visible height at 600 to 800 mm and advise that anything over about 700 mm above the mattress is fixed to the wall rather than carried on struts, to stop it moving. A floor-standing headboard of about 1,350 mm overall is typical in one of them. These are retail guidance for domestic beds, not a standard, so hotel and contract headboards are set by the brand and the workshop.

Bedside tables are set from the mattress top, not from the floor, for the same reason: bases vary. Our bedside table page puts the top at mattress height, 60 to 65 cm. Reading-light, control and socket heights are on the wall light and sconce sheet and the hotel guestroom lighting sheet; Approved Document M, paragraph 4.30, gives 400 to 1,000 mm above the floor for wall-mounted sockets and 750 to 1,200 mm for controls that need precise hand movements, and whether a bedside control built into a headboard counts is for building control to say.

Headboard width, bedside tables and the wall behind

A headboard sold for a bed size is the width of its base. A feature panel is usually wider than the bed, to carry the bedside tables and lights and to frame the bed. We draw two cases: the same width as the base (1,800 mm for a super king) and 150 mm wider each side (2,100 mm), with a 500 mm bedside table beyond. The 150 mm is a drawing example; the width is a design decision and the workshop confirms what its panel sizes and fixings allow.

• Give the headboard its own dimensions: overall width and height, thickness, the height of the bottom edge of a wall-hung panel, and the gap to the mattress.
• Services. If lights, sockets or switches are built into the panel, give the cable outlets, backplate sizes and an access hatch. Whether a socket or switch built into a headboard counts as wall-mounted under Approved Document M is not settled by the text we read: ask building control, and say so on the drawing.
• Fixing. A wall-hung or tall headboard is fixed to the structure behind it. The wall, the fixings and the load are the workshop's and the contractor's to confirm; no fixing load is quoted here.
• Datums on the drawing: finished floor level, base, mattress top, bedside top, headboard top and bottom, with the mattress thickness and base height stated, so any height can be checked against another.

Hotel conventions and the accessible room

Twin or super king. A hotel often needs one room that can be let either way, which is what a zip-and-link pair is for: two 900 mm mattresses on two bases that can be pushed together, or kept apart. The drawing shows the footprint: a super king is 1,800 mm wide, and a twin pair with a 700 mm gap and a bedside table between is 2,500 mm. That gap is a layout choice. Brand standards, not a regulation, usually set the bed size, the base and the mattress type for a hotel, so ask for them before drawing.

Under-bed clearance. A solid base leaves nothing to clean under. A platform on legs leaves a gap, and housekeeping's equipment decides how big: we show 150 mm as an example, and the range of about 150 to 250 mm is practice with no source. Confirm with the operator.

Accessible rooms (England). Approved Document M volume 2 asks that a wheelchair-accessible bedroom is "sufficiently spacious to enable a wheelchair user to transfer to one side of a bed, with or without assistance" (paragraph 4.19, printed p. 42), and that its size "allows for a wheelchair user to manoeuvre at the side of a bed, then transfer independently to it" (4.24(l), p. 43). At least one such bedroom is provided for every 20 bedrooms, or part of that number (4.24(g)). Diagram 17 (p. 44) is "one example" of an accessible hotel bedroom with twin beds: it annotates 1,500 mm minimum at the side of a bed, 700 mm minimum between the two beds, a 1,500 x 1,500 mm wheelchair turning space and 300 mm minimum beside the leading edge of the door. Paragraph 4.24(q) places the emergency assistance pull cord so that it can be operated from the bed and from the floor beside it. No bed height or bed size is given anywhere in the volume. Treat the diagram's figures as an example, and take the layout, the bed height and the transfer space from the access consultant, who may work from BS 8300-2:2018 (not read for this sheet).

Fire, and what to ask the headboard workshop

Fire evidence follows the item. A mattress, divan or bed base is a BS 7177 item, tested at the category the fire risk assessment sets, and the Responsible Person for the premises sets that category in writing, not the designer or the workshop. For an upholstered headboard in a hotel we found no standard named in the sources we read: the fire documentation matrix says the route is not settled and the answer is to ask the fire risk assessor or building control in writing, then ask for a report on the headboard as built. The same sheet gives the levels, the documents to ask for and the questions to put to the workshop. A bed standard such as BS EN 1725:2023 is about strength and durability of the assembled bed and, from the listings read, excludes flammability: it is not fire evidence.

• Ask the partner workshop which fire route the headboard build was tested to (fabric, interliner, filling and panel), the report and its date, and whether the fabric you chose is covered.
• Ask how the headboard is fixed, the structure it needs and the weight, and who confirms the wall.
• Ask how the cover comes off for cleaning and whether it can be re-covered without replacing the panel.
• Ask for the finished size and the tolerance, and what is measured from the finished floor.

Bed [super king]: mattress [1,800 x 2,000] mm, tolerance plus or minus [20] mm (industry practice as stated by the National Bed Federation), as [one mattress / two 900 mm mattresses zip-and-linked]. Base [divan / platform on legs], overall [ ] x [ ] mm. Mattress thickness [250] mm, base height [350] mm, mattress top [600] mm above finished floor level. Under-bed clearance [none / 150] mm. All heights are from finished floor level and are written on the shop drawing.

Headboard [ref]: overall [1,300] mm high from [finished floor level / bottom edge of the panel at 350 mm], [2,100] mm wide, [60] mm thick, [floor-standing / wall-hung], fixed to [structure] with [fixings] by [contractor]. Visible height above the mattress [700] mm. Services: [lights, sockets, switches] with cable outlets at [ ] and an access hatch at [ ]. Cover removable for cleaning [yes / no]. Fabric [ref]. Dimensional tolerance [ ] mm.

Mattress and base to BS 7177 at the category set in writing by [Responsible Person / fire safety adviser], report ref [ ]. Headboard fire route confirmed in writing by [fire risk assessor / building control] before production, with a report for the headboard as built [ref, date]. Wheelchair-accessible bedrooms [number] as Approved Document M volume 2 and the access consultant's drawing [ref]: bed height and transfer space as that drawing, not as this specification.

Standards and sources

• Approved Document M, Volume 2 (2015 edition incorporating 2020 and 2024 amendments; England): paragraphs 4.17 to 4.19, 4.24 and 4.30 and Diagram 17 read; no bed height or size is given.
• National Bed Federation: UK bed sizes and Regulations and Standards pages: six standard sizes; accepted tolerance plus or minus 20 mm, no legal standard; the Federation's list of standards is members-only and was not read.
• BS EN 1334:1996, BS EN 1725:2023, BS 7177, BS 8300-2:2018: named (measurement and tolerances; bed strength; mattress fire; accessible design): not read, no figures quoted. Confirm against the current editions.

Questions we are asked

What are the standard UK bed sizes in mm?

As listed by the National Bed Federation: small single 750 x 1,900, single 900 x 1,900, small double 1,200 x 1,900, double 1,350 x 1,900, king 1,500 x 2,000 and super king 1,800 x 2,000 mm. Beds are sized by the mattress, and the frame or base is not standardised, so ask for the overall size.

How big is a super king headboard?

A headboard sold for a super king is made for a 1,800 mm wide base. A feature headboard is often wider than the bed, for example 2,100 mm in our drawing. Give the headboard its own width on the drawing and confirm what the workshop's panels allow.

How high should a headboard be above the mattress?

Two UK retail guides read for this sheet give 600 to 800 mm visible above the mattress, and advise fixing anything over about 700 mm to the wall. That is retail guidance for domestic beds, not a standard. Hotel headboards are set by the brand and the workshop.

What is a standard bed height?

There is no standard we could find. The mattress top is commonly about 600 to 650 mm above the floor (our bedside table page says 60 to 65 cm), made up of the base height and the mattress thickness. State the finished floor datum and both components on the drawing.

Does Approved Document M set a bed height?

No. Volume 2 asks that a wheelchair-accessible bedroom allows a wheelchair user to manoeuvre at the side of a bed and transfer to it (paragraphs 4.19 and 4.24(l)), and Diagram 17 annotates 1,500 mm at the side and 700 mm between twin beds in one example. It gives no bed height or bed size. Ask the access consultant.

What fire standard does a hotel mattress or headboard need?

Mattresses, divans and bed bases are tested to BS 7177 at the category the fire risk assessment sets. For an upholstered hotel headboard no standard is named in the sources we read: ask the fire risk assessor or building control in writing, then ask for a report on the headboard as built. See the fire documentation matrix.

Is a super king or twin better for a hotel?

That is a brand and market decision. A zip-and-link pair lets one room be let either way, at the cost of a join in the mattress and a base that can separate. The footprint is 1,800 mm wide as a super king and about 2,500 mm as a twin pair with a 700 mm gap.