Design for print// Paper sizes and weight..

Paper sizes//

The most recognised paper sizes used are A, B and C sizes, they are what we use in the UK and everywhere else in the world except the USA. Below are images of paper size charts and how the sizes work. A size is the size that is most commonly used and heard of. B sizes are slightly larger than A and C is mainly used for the measurements of envelopes.

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Paper weight//

The weight of paper is called the 'GSM', this stands for grams square meter. The weight of a paper is based on how much it weighs in grams per 1 square meter. The higher the GSM, the thicker the paper.

'GSM stands for ‘Grams per Square Metre’, It’s a measurement of paper quality which allows for printers to be far more precise than they could be with wooly terms like ‘thick’, ‘thin’ and ‘kinda in the middle’. As the name suggests, it tells you how much a square metre of the paper or card you’re using would weigh (in grams, believe it or not). Although everyone tends to think in terms of thickness, with premium print being on thicker paper, it’s a good means of standardising the business and making sure that customers know what they’re getting.

We know that it’s not easy to visualise a square metre of paper (although it’s pretty fun: give it a go). So here’s a basic layman’s translation of some of the most common paperweights.

350GSM – This is what you might expect a reasonable quality business card to be printed on (or a Pulse Print flyer!).

180 to 250 GSM – Like a mid-market magazine cover.

130 to 170 GSM – A good quality promotional poster. Something that you’d expect to last a couple of months in most conditions.

90GSM – Mid-Market magazine inner pages

35 to 55 GSM – Most newspapers

Less than 35 GSM – If someone’s trying to sell you this as anything other than rice paper, you want to be reporting them for attempted theft.'

http://www.pulseprint.co.uk/article/one_minute_wonders_gsm/