Standard page sizes

A Series UK paper sizes in mm
A0 841 × 1189
A1 594 × 841
A2 420 × 594
A3 297 × 420
A4 210 × 297
A5 148 × 210
A6 105 × 148
A7 74 × 105
A8 52 × 74
A9 37 × 52

B Series UK paper sizes in mm
B0 1000 × 1414
B1 707 × 1000
B2 500 × 707
B3 353 × 500
B4 250 × 353
B5 176 × 250
B6 125 × 176
B7 88 × 125
B8 62 × 88
B9 44 × 62

C Series UK paper sizes in mm (used for envelopes)
C0 917 × 1297
C1 648 × 917
C2 458 × 648
C3 324 × 458
C4 229 × 324
C5 162 × 229
C6 114 × 162
C7 81 × 114
C8 57 × 81
C9 40 × 57

D Series UK paper sizes in mm (used for envelopes)
DL 110 × 220

US paper sizes in mm
Letter 216 x 280
Legal 216 x 356
Half Letter 140 x 216
Executive 184 x 267
Gov't. Legal 216 x 330
Gov't. Letter 203 x 267
F4 210 x 330
Broadsheet 457 x 610