Comparison of ISO 216 paper sizes from A4 to A3 and Swedish extensions SIS 014711 Comparison of ISO 216 paper sizes from A4 to A3 and Swedish extensions SIS 014711 by CMG Lee. A3: 297 mm (11.7″) × 420 mm (16.5″) H4: 284 mm (11.2″) × 402 mm (15.8″) D4: 272 mm (10.7″) × 385 mm (15.2″) F4: 261 mm (10.3″) × 369 mm (14.5″) B4: 250 mm (9.8″) × 353 mm (13.9″) G4: 239 mm (9.4″) × 338 mm (13.3″) C4: 229 mm (9.0″) × 324 mm (12.8″) E4: 219 mm (8.6″) × 310 mm (12.2″) A4: 210 mm (8.3″) × 297 mm (11.7″)