Basic Quilt Size and Measurements.....

basic quilt sizes:

A nice baby size quilt is around 42" x 52".

For a square baby quilt, anywhere from 36" to 42" works well.
A crib quilt measures 45" x 60".

A nice lap size quilt is 60" x 72".

Twin size, 63" x 88".

Full size, 78" x 88".

Queen, 84" x 92"

King, 100" x 92".

If you are making a quilt for a specific bed in your house, it's best to measure the top of your mattress and add the amount of overhang you want on each side, then you will have the perfect measurements for your bed. I'd recommend this, especially if you have a very deep mattress, or if you have head and foot boards to deal with. Or bunk beds. (Via Crazy Mom Quilts blogsite)