Twin Sheet Measurement - Web learn how to measure and choose the right bed sheets for your mattress size. These are the typical twin mattress and bed frame dimensions to expect: 38” x 75” = 2850 square inches or 19.8 square feet. Web standard twin size dimensions. Twin sheets are 38 inches wide and 75 inches long, and they fit mattresses up to 14 inches deep.
Web learn how to measure and choose the right bed sheets for your mattress size. Web standard twin size dimensions. 38” x 75” = 2850 square inches or 19.8 square feet. Twin sheets are 38 inches wide and 75 inches long, and they fit mattresses up to 14 inches deep. These are the typical twin mattress and bed frame dimensions to expect: