Paper Sizes

Most people are familiar with the A series which includes A4 the usual letterhead size.

There is also a B series which provides larger sizes.

The C series is for envelopes - A C4 envelope being ideal for holding an A4 sheet.

Printers use different paper sizes - RA and SRA - to allow enough room for grip, trim and bleed. The sheets are then trimmed down to their finished size after printing.

All dimensions are in millimeters

A Sizes		B Sizes		C Sizes
A0	841 × 1189	B0	1000 × 1414	C0	917 × 1297
A1	594 × 841	B1	707 × 1000	C1	648 × 917
A2	420 × 594	B2	500 × 707	C2	458 × 648
A3	297 × 420	B3	353 × 500	C3	324 × 458
A4	210 × 297	B4	250 × 353	C4	229 × 324
A5	148 × 210	B5	176 × 250	C5	162 × 229
A6	105 × 148	B6	125 × 176	C6	114 × 162
A7	74 × 105	B7	88 × 125	C7	81 × 114
A8	52 × 74	B8	62 × 88	C8	57 × 81
A9	37 × 52	B9	44 × 62	C9	40 × 57
A10	26 × 37	B10	31 × 44	C10	28 × 40

RA  Sizes		SRA Sizes
RA0	860 × 1220	SRA0	900 × 1280
RA1	610 × 860	SRA1	640 × 900
RA2	430 × 610	SRA2	450 × 640
RA3	305 × 430	SRA3	320 × 450
RA4	215 × 305	SRA4	225 × 320