Differentiate Between buying A4 copy paper and letter copy paper
When you want to buy A4 copy paper, have you really taken a look at it? Or can
you automatically eye the standard paper used for A4 and letter.
You have more than likely heard of A5 or Tabloid, but for many, the only two page
sizes that really matter are A4 or Letter. There exist a number of paper sizes
that are relevant to our everyday lives, and knowing them can save you time and
money when printing and copying. The are listed below as;
A) ISO A paper sizes
A-series consists of a logical set of paper sizes that are defined by the ISO 216 standard.
Largest size (A0) measures one square meter. The height/width ratio remains constant (1:1.41)
for all sizes, this means you get the A1 size by folding an A0 paper in two along its shortest side.
Then fold the A1 size in two to get an A2 size paper, and so on… A-sizes are used to define the
finished paper size in commercial printing: A4 is for office documents, A5 is for notepads and A6 is for postcards.
B) ISO B paper sizes
The same logic from the A-sizes also applies for the B-series, but here our starting point was the dimension
of one of the sides, which starts at 1 meter. B-sizes are often used for posters, such as 50 cm × 70 cm-B2.
C) Series C paper sizes
C-sizes are used for envelopes to match the A-series paper, i have omitted unrealistic sizes like C0 (imagine an
envelope measuring 917 by 1297 millimeters). Fit for any envelope the consistent aspect ratio of the ISO papers makes it easy to fit larger paper sizes into smaller envelopes. This can be done by simply folding the larger papers in half (crease parallel to the shorter sides) until you reach the desired size. The difference in the number of the page sizes equals the number of times you should fold it.
D) ISO RA & SRA paper sizes
These oversize paper sizes are used by printers. The dimensions in millimeters are rounded to the nearest value.
E) American paper sizes
United State of America and Canada do not use the international standards but instead rely on the paper sizes below. The ANSI standard was added in 1995 to create a set of sizes that are based on shared dimensions.
F) English paper sizes (writing papers)
English uses the A-sizes for office and genre UK metric book printing sizes
For books A-sizes often aren’t used because A4 is too large and A5 too small. Metric Crown
Quarto are 2 frequently used sizes that are more comfortable to hold and read.
G) Newspaper sizes
The dimensions of newspaper pages are not that strictly defined, so the average or most frequently used size is mentioned.