A guide to paper sizes

More than just A, B and C!

Here in the UK, we generally work with A Size or B Size paper and C Size for envelopes. Everyone is familiar with standard A4 office paper size, and also A5 (generally flyer size) plus A3 (twice as large as A4). In fact, there are so many paper sizes which are used in the UK!

The A series of paper are all defined to an ISO 216 standard, which means manufacture of these sizes must be within a strict tolerance. Under 150mm in length allows for a tolerance of +/-1.5mm, over this there is a tolerance of +/-2mm up to a length of 600mm, over this the tolerance is in fact +/-3mm.

Within the printing manufacture sector, we use RA and SRA sizes which allow for bleed and for the final job to be trimmed to a finished A size.

The most common A sizes are listed below for ease of reference:

A0841 x 1189 mm
A1594 x 841 mm
A2420 x 594 mm
A3297 x 420 mm
A4210 x 297 mm
A5148 x 210 mm
A6105 x 148 mm

Efficient use of paper is to stick to A sizes, however at Continuum we are always happy to produce bespoke projects for our customers. Contact one of the team to discuss your next design or print project and we will assist you to create something beautiful!

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Continuum have a combined experience of nearly 30 years of print & design knowledge. We have been helping many household names, small companies and individuals bring their ideas to life with extensive knowledge of the industry, latest technology and design trends.