A quick reference guide to A, SRA and B paper sizes.
‘A’ PAPER SIZES
The most common paper size used in the UK.
A7
210 x 297
mm
A6
105 x 148 (Postcard)
mm
A5
148 x 210
mm
A4
210 x 297
mm
A3
297 x 420
mm
A2
420 x 594
mm
A1
594 x 841
mm
A0
841 x 1189
mm
‘SRA’ PAPER SIZES
Used in the print industry. SRA sizes are slightly larger than A, to provide extra space for the printers marks and bleed area, SRA sheets are then trimmed down to A size. Most commonly used from SRA3 size and upwards.
SRA4
225 x 320
mm
SRA3
320 x 450
mm
SRA2
450 x 640
mm
SRA1
640 x 900
mm
‘B’ PAPER SIZES
An alternative to A sizes, often used for posters and books. Less common than A size, specifying these paper sizes can help your printed material stand out amongst the masses.
B7
88 x 125
mm
B6
125 x 176
mm
B5
176 x 250
mm
B4
250 x 353
mm
B3
353 x 500
mm
B2
500 x 707
mm
B1
707 x 1000
mm
B0
1000 x 1414
mm
