Paper formats (A4 system)

A0 840.9 mm * 1189.2 mm A1 840.9 mm * 594.6 mm A2 420.4 mm * 594.6 mm A3 420.4 mm * 297.3 mm A4 210.2 mm * 297.3 mm

A5 210.2 mm * 148.7 mm A6 105.1 mm * 148.7 mm A7 105.1 mm * 74.3 mm A8 52.555 mm * 74.3 mm A9 52.555 mm * 37.15 mm

840.9 mm * 1189.2 mm = 0.999,998,28 m² ~ 1 m²