A king-size blanket typically measures 108 inches wide and 90 to 100 inches long. This size is designed to amply cover a standard king bed, which is usually 76 inches wide and 80 inches long. If you have a California king mattress, which measures 72 x 84 inches, you may want to choose a king-size blanket on the longer side to ensure proper coverage.
In summary, a king-size blanket is approximately 108 inches wide and 90 to 100 inches long, providing ample coverage for a standard king bed.
