A full bed, also known as a double bed, measures approximately 54 inches (137 cm) wide by 75 inches (191 cm) long. This size offers about 28.13 square feet (2.62 square meters) of sleeping area. Mattress thickness typically ranges from 9 to 12 inches (22.9 to 30.5 cm)

. Full beds provide more width than a twin bed and are suitable for a single sleeper who wants extra space or for two people in a smaller or more intimate setting. They are commonly used in smaller bedrooms or guest rooms where space is limited

. The bed frame for a full bed is usually slightly larger than the mattress itself, ranging from about 56 to 60 inches wide and 76 to 80 inches long, to accommodate the mattress and provide structural support

. In summary:

• Mattress dimensions: 54" wide x 75" long (137 cm x 191 cm)
• Mattress thickness: 9" to 12" (23 cm to 30.5 cm)
• Bed frame dimensions: approximately 56-60" wide x 76-80" long

This size balances space efficiency and comfort for individuals or couples in smaller rooms