Bed Size Calculator
Find the right bed size for your room by checking mattress dimensions against your bedroom space requirements.
Formula
Clearance = room dimension − bed dimension
- Recommended minimum clearance: 2 ft (24 in) on each walkway side.
- Bed should not exceed 50–60% of room area for comfortable layout.
- Measurements are for mattress only, not including frame/headboard.
Queen bed in 12×10 ft room
Inputs
- Room Length: 12 ft
- Room Width: 10 ft
- Bed Size: queen
Queen = 5×6.67 ft. Width clearance = 10−5 = 5 ft (2.5 ft each side). Length clearance = 12−6.67 = 5.33 ft. Fits comfortably.
Frequently asked questions
What clearance do I need around a bed?
At least 24 inches (2 ft) on the sides you walk along; 18 inches minimum.
What is the most popular bed size?
Queen is the most popular — fits most bedrooms and is comfortable for couples.
What is the difference between King and California King?
King (76×80 in) is wider; California King (72×84 in) is narrower but longer.
Should I measure the frame or the mattress?
Measure the mattress. The frame typically adds 1–3 inches on each side.