12½ Paper Size Dimensions

6¼ 152 × 89 mm 6¾ 165 × 92 mm 7 172 × 95 mm 7¾ Monarch 191 × 98 mm 8⅝ 219 × 92 mm 9 225 × 98 mm 10 241 × 104 mm 11 264 × 114 mm 12 279 × 121 mm 14 292 × 127 mm 16 305 × 152 mm A1 92 × 130 mm A2 Lady Grey 146 × 111 mm A4 159 × 108 mm A6 Thompson's Standard 165 × 121 mm A7 Besselheim 184 × 133 mm A8 Carr's 206 × 140 mm A9 Diplomat 222 × 146 mm A10 Willow 241 × 152 mm A Long 225 × 98 mm 1 229 × 152 mm 1¾ 241 × 152 mm 3 254 × 178 mm 6 267 × 191 mm 8 286 × 210 mm 9¾ 286 × 222 mm 10½ 305 × 229 mm 12½ 318 × 241 mm 13½ 330 × 254 mm 14½ 368 × 292 mm 15 381 × 254 mm 15½ 394 × 305 mm