Standard Sizes in The United States and Canada
Modern manufacturing conventions have resulted in a limited number of standard sizes of commercial bedding for mattresses and box springs. Imported beds vary by country of origin as per the table above.
These dimensions are for the mattress—the actual bed frame will be a little larger in order to fully encompass and support the mattress. The thickness of the mattress may vary considerably.
- Twin
- 37.5 in × 74.5 in (95 cm × 189 cm)
- Full or double
- 54 in × 75 in (137 cm × 191 cm)
- Queen
- 60 in × 80 in (152 cm × 203 cm)
- King
- 76 in × 80 in (193 cm × 203 cm)
- A king-sized bed may have a king-sized box spring (foundation), or two smaller box-springs (each somewhat larger than that of a twin bed) under a king-sized mattress.
- California king
- 72 in × 84 in (183 cm × 213 cm)
Read more about this topic: Bed Size
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