Blanket sizes correspond to mattress sizes, which are, from smallest to largest: twin, extra long twin, full, queen, king and California king. However, the actual measurements and product offerings vary considerably with each manufacturer, so firm standards do not exist. Instead, blanket sizes follow general trends -- along with a few exceptions and variations.
Common Blanket Sizes
The most commonly offered blanket and mattress sizes are:
Twin-size blanket, about 66 inches wide by 90 inches long; fits twin-size mattress, 39 inches wide by 75 inches long.
Twin XL size blanket, about 66 inches wide by 95 inches long; fits twin XL size mattress, 39 inches wide by 80 inches long.
Full-size blanket, about 80 inches wide by 90 inches long; fits full-size mattress, 54 inches wide by 75 inches long.
Queen-size blanket, about 90 inches wide by 100 inches long; fits queen-size mattress, 60 inches wide by 80 inches long.
King-size blanket, about 108 inches wide by 100 inches long; fits king-size mattress, 76 inches wide by 80 inches long.
California king-size blanket, about 104 inches wide by 108 inches long; fits California king-size mattress, 72 inches wide by 84 inches long.
Exceptions and Variations
Not all manufacturers offer all size blankets, and the measurements of any specific product can vary. For example, some blankets are labelled full/queen size and measure 90 inches wide by 90 inches long to fit either a full-size or queen-size bed.Extra-deep mattresses are another variation that may require a larger blanket size to fit well. Measuring your mattress and comparing it with the manufacturer's information is the surest way to determine if a blanket will fit your bed.
Measuring for Blanket Size
Measure the width and length of the mattress top; then measure the side drop from the top to the bottom of the mattress. To allow for side drape and tuck-in at the foot of the bed, double the drop measurement and add it to the length and width of the mattress. This provides the minimum size you should look for when comparing your results to the product information.