How to Convert a Twin Bed to a Full Size Bed

Written by mallory ferland
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There are countless ways to go about "extending" a twin size bed, but most are severely uncomfortable. Adding a futon or pillow next to the bed will not work. Your only bet is to purchase a new full, queen or king size bed--or purchase a second twin to add to the first. There are tricks that can help in the combining of two twin beds that will be much cheaper than purchasing a new bed, as well as the added convenience of being separated when needed.

Skill level:

Things you need

  • Two twin beds
  • Two twin or one king box springs
  • Commercial bed straps or homemade
  • King frame (optional)

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  1. 1

    Push together two twin box springs horizontally in the location you wish to construct the bed. Lay the two twin mattresses on top of the box springs vertically. The box spring and mattress should not be stacked linearly (one on top of the other), but think of them as if laying a brick: two horizontal, topped by two vertical. Structurally the bed will be more sound, and it will severely reduce the possibility of the beds separating from each other.

  2. 2

    Strap the two twin beds together. You will either need to use a commercial bed connector such as Create-a-King or Extend-a-Bed, or make your own. The commercial products are kits that secure the beds on a circumference as well as provide a cover for the gap created down the centre. They are relatively inexpensive, averaging $45 to $75 dollars.

  3. 3

    Use your own straps. Even if you do not purchase a commercial strapping kit, it is important to secure the beds with straps to keep them from shifting during movement. If using your own strapping device, try using luggage straps or tie-down belts. The goal is to lock the two separate pieces together so that no matter what the movement is on top, they won't separate.

  4. 4

    Use a frame. You can use a king size frame to fit both twin mattresses in. If you have a full size frame, both mattresses (unless they are smaller than a standard twin) will not fit. Do not try to connect twin beds that are in their own wooden or metal frames. Most wooden and metal frames are much wider than the mattress, and it is near impossible to connect without creating a large gap. If you must combine two frames, consider wedging one frame against a wall and use clamps or cords to secure the frames together. You will either need a king size board to lay across the two frames, or a king size box spring.

  5. 5

    Fill the gap. Tuck a thin rolled sheet or rolled pillow cases into the gap between the two mattress (unless you are using a commercial mattress connecting kit). Mattresses are curved, so no matter how tightly you fit them together, they will have a slight ditch or dip in the middle.

  6. 6

    Fit the new bed with any king size sheet, blanket and comforter. Again, you can attempt using full size sheets to cover the bed. However, if the two beds are standard size twin (and not smaller college-size twins) you will have difficulty fitting a full. It is wise to use a bed skirt as well to cover up the skewed angle of the box springs; a king size bed skirt will work.

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