Bed Sizes
Before starting your next quilt you need to decide how big to make it. Where is it going to go when it is finished? How do you want it to look? Will it just cover the top of the bed? Will it hang down over the sides? How much? Will it go under or over the pillows?
Here are the standard sizes for the tops of mattresses:
Crib - 26" x 48" This is the most common but before making something for a crib it is best to measure that mattress.
Twin - 39" x 75" Double - 54" x 75"
Queen - 60" x 80" King - 78" x 80"
California King - 72" x 84"
Then you need to consider the height of the mattress. Most are 8 - 10" but some of the high loft ones can be 18".
Consider that there will be people in the bed. Bodies will cause the sides to pull up. Is there enough overlap to prevent gaps?
Also there is the height from the floor. Do you want the quilt to go to the floor like a bed spread or will there be a dust ruffle?
Remember to allow for shrinkage. Quilting usually causes a 5% shrinkage in size. The denser quilting will cause more shrinkage. Cleaning will also cause shrinkage. Always err on the side of a little too big.
There are no absolute standards for bedding.
Here are some common commercial sizes for comforters
Twin - 65" x 88" Double - 80" x 88"
Queen - 86" x 93" King - 104" x 93"
Commercial bedspread sizes
Twin - 81" x 107" Double - 96' x 107"
Queen - 102" x 112" King - 120" x 112"
Common finished quilt sizes
Crib - 50" x 53" Twin - 75" x 98" Double - 83" x 106"
Queen - 90" x 106" King - 107" x 108"