Difference & Comparison of Full Beds Vs. King Beds


Deciding between a full or king bed comes down to several factors. A king bed is significantly larger but also comes at larger cost. Keep the available bedroom space in mind as well, since a larger bed means less walking space in the room.

Bed Size Differences

A full-size bed measures 54 inches wide, 74 to 75 inches long. A king-size bed -- the largest standard bed size available -- is 76 inches wide, 80 inches long. In case you haven't yet considered it, there's one more standard bed size between the two, the queen-sized bed. A queen bed is 60 inches wide, 80 inches long.


  • The actual mattress measurements [may vary slightly](http://www.serta.com/mattress-guide/shopping-sense/mattress-sizes) from one manufacturer to the next, although the difference from one to another should be an inch or less in width or length.

Full-Size Features

  • A full-size bed offers a comfortable sleeping space for an adult or teen, or a luxurious, spacious experience for a child.

  • Because a full-size bed is compact compared to a king bed, it is a viable option for an adult even in a relatively small bedroom. A large shared bedroom may have enough room for two full beds.
  • While two adults can share a full bed, it may not be a comfortable long-term experience. If each person uses half the mattress, that means there's only 27 inches worth of width to shift or roll over in bed without touching the other person. A twin bed, for comparison, offers 38 inches of width, so you'll actually have less room sharing a full bed than you would sleeping solo on individual twin beds. 
  • A full-size mattress costs a good deal less than the same model in a king mattress. Likewise, the bedding for a full bed costs less than the same offering in king-size form. 
  • Bedding for a queen or king bed, with the exception of the fitted sheet, can be used on a full-sized bed, although the fit may be a bit sloppy.

King-Sized Considerations

  • A king bed offers considerably more space than a full bed -- 22 extra inches of width and 6 more inches of length, on average. The extra space may offer a luxurious, relaxing feeling if you are used to a smaller bed.

  • The extra length of the king-sized bed comes in handy for tall adults who find a full bed almost too short.
  • A king-sized box spring may be difficult to get through doorways or around angles to fit into the bedroom, since it does not flex. If you can barely manipulate a full-sized box spring through your home, keep in mind that a king bed is as wide as a full bed is long, so the extra size makes it extra unwieldy.
  •  A king bed takes up quite a bit of space in a room, so it is a good option for a large master bedroom where it serves as a focal point. It may be too large for small bedroom spaces.

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