What are the measurements for a twin-size blanket and fitted sheet?

The twin-size fitted sheet is 39 inches wide by 75 inches long, and the standard blanket for a twin-size mattress is 66 inches wide by 90 inches long. A twin-size flat sheet measures 66 inches wide by 96 inches long.

While there is a standard twin-size blanket, the actual blanket used can vary depending on how much coverage is desired, whether the blanket is tucked in, how much of the blanket needs to hang over the edges of the bed and how deep the mattress is. For more coverage on a twin bed, try a double-size blanket, which measures 80 inches wide by 90 inches long.