US Queen mattress: clear-space planning estimate

Planning estimate, not a building-code minimum: US Queen mattress-only: about 2.74 m (9 ft) wide by 2.64 m (8 ft 8 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 Queen mattress

Market
US
Mattress width
152.4 cm5 ft 0 in
Mattress length
203.2 cm6 ft 8 in
Mattress-only physical width
152.4 cm5 ft 0 inMattress-only footprint; frame not measured.
Recommended clear room width
274.3 cm9 ft 0 in
Mattress-only physical length
203.2 cm6 ft 8 inMattress-only footprint; frame not measured.
Recommended clear room length
264.2 cm8 ft 8 in
Assumptions for us queen mattress
  • 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.

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.

  • 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.