US Full vs UK Standard Double: room-space estimates
Planning estimate, not a building-code minimum: US Full mattress-only: about 2.59 m (8 ft 6 in) wide by 2.51 m (8 ft 3 in) long; UK Standard Double in IKEA MALM Standard Double frame: about 2.72 m (8 ft 11 in) wide by 2.60 m (8 ft 6 in) long. The model applies the source-backed approximately 24-inch side allowance and a separate FitWise-assumed 24-inch foot allowance to each market-specific mattress footprint. Only entries naming a frame include that specific sourced model; other entries are mattress-only. Nightstands, wardrobe/dresser access, doors and circulation are excluded; measure the actual setup before buying.
US Full mattress (often called Double)
- Market
- US
- Mattress width
- 137.2 cm4 ft 6 in
- Mattress length
- 190.5 cm6 ft 3 in
- Mattress-only physical width
- 137.2 cm4 ft 6 inMattress-only footprint; frame not measured.
- Recommended clear room width
- 259.1 cm8 ft 6 in
- Mattress-only physical length
- 190.5 cm6 ft 3 inMattress-only footprint; frame not measured.
- Recommended clear room length
- 251.5 cm8 ft 3 in
Assumptions for us full mattress (often called double)
- Portrait layout: bed width runs across the room and the headboard is against a wall.
- No outer frame was sourced for this market example; this is mattress-only geometry.
- Apply the recommendation to each accessible side; actual access needs vary. Editorial comfort guidance, not a regulation.
- FitWise modeling assumption: 24 inches at the foot. Sleep Foundation discusses space around each side; applying that figure at the foot is an extrapolation, not direct source guidance or a code minimum. The geometry engine treats the headboard as against a wall.
UK Standard Double mattress
- Market
- UK
- Mattress width
- 135.0 cm4 ft 5 in
- Mattress length
- 190.0 cm6 ft 3 in
- Mattress/frame physical width
- 150.0 cm4 ft 11 inUsing IKEA MALM Standard Double frame.
- Recommended clear room width
- 271.9 cm8 ft 11 in
- Mattress/frame physical length
- 199.0 cm6 ft 6 inUsing IKEA MALM Standard Double frame.
- Recommended clear room length
- 260.0 cm8 ft 6 in
Assumptions for uk standard double mattress
- Portrait layout: bed width runs across the room and the headboard is against a wall.
- Frame overhang is derived from the published dimensions of IKEA MALM Standard Double frame; other frames differ.
- Apply the recommendation to each accessible side; actual access needs vary. Editorial comfort guidance, not a regulation.
- FitWise modeling assumption: 24 inches at the foot. Sleep Foundation discusses space around each side; applying that figure at the foot is an extrapolation, not direct source guidance or a code minimum. The geometry engine treats the headboard as against a wall.
Sources and evidence
- Fitwise internal reference-size and clearance convention Fitwise.stream; accessed 2026-10-06
Internally documented round-number reference sizes and comfort-clearance recommendations used when no single external standard applies; see specs/DATA_MODEL.md §2.
- MALM bed frame, Standard Double, weight and measurements IKEA UK; accessed 2026-10-06
Product listing states mattress width 135 cm and length 190 cm, with bed-frame outer width 150 cm and length 199 cm. Frame allowances in the model are derived by halving the outer-minus-mattress difference on each axis.
- Mattress Sizes 101: Finding Your Perfect Fit — Bedroom Dimensions Sleep Foundation; accessed 2026-10-06
Editorial recommendation to leave about 24 inches of space around each side of a bed to avoid a cramped feeling. This is guidance, not a building code or accessibility requirement.
- Mattress Sizes 101: Finding Your Perfect Fit Sleep Foundation; accessed 2026-10-06
Publishes US nominal mattress dimensions in inches. US King 76×80, Queen 60×80, Full 54×75. Values converted to millimetres; "Full" is used as the US-market term rather than treating Double as a universal name.