Pick a bed size from standard dimensions using sleepers, sleeper height and room size, with a walkway clearance check.
Recommended bed
How to use this tool
Choose one or two sleepers.
Enter the tallest sleeper height in inches.
Enter room length and width in feet, plus walkway clearance under advanced options.
Read the recommended bed, its dimensions and the clearance check.
Formula & worked example
Two sleepers in a 12 x 12 ft room with 30 inch walkways are recommended a King (76 x 80 in); a single sleeper 76 inches tall is recommended a Twin XL (38 x 80 in).
Limitations — read this before you rely on it
Guide only using US standard sizes: it ignores door swings, wardrobes, radiators, ceiling slope and personal comfort preference.
Frequently asked questions
Twin 38×75, Twin XL 38×80, Full 54×75, Queen 60×80, King 76×80 and California King 72×84 inches.
When sleepers are over about 6 ft 2 in and the room fits its 84 inch length; otherwise a King gives more width.
About 30 inches each side is comfortable; 24 inches is a workable minimum in a small room.
Only if the room fits it with walkways left over; a cramped King is worse than a comfortable Queen.
Yes, UK sizes differ (for example a UK King is 60×78 in), so this tool uses US dimensions only.