US Letter US Legal Executive A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 1/3 A4 1/4 A4 1/8 A4 1/4 A3 1/3 A5 DL Envelope C6/C5 Envelope Envelope No10 Envelope No10 Straight Rotated 90 degrees Rotated 180 degrees Rotated 270 degrees Portrait Landscape Upside down portrait Upside down landscape 2 pages to 1 4 pages to 1 Divided Folded