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Our frame sizes always relate to the internal dimensions, meaning that if you order an A4 size frame for example, this will hold an A4 size poster/insert. The external size will be slightly larger and the visible size smaller. As a rule of thumb the visible area of your poster/insert will be approximately 10mm smaller around all four edges, and this can vary depending on the profile (width) of the frame.
See the A-Size illustration to the right to help you visualise the scaling of A sizes or use our handy size converter below to convert units of measure.
Metric Name |
Size in mm |
Size in Inches |
A0 |
841 x 1188 |
33"1/8 x 46"3/4 |
A1 |
594 x 841 |
23"3/8 x 33"1/8 |
A2 |
420 x 594 |
16"1/2 x 23"3/8 |
A3 |
297 x 420 |
11"3/4 x 16"1/2 |
A4 |
210 x 297 |
8"1/4 x 11"3/4 |
A5 |
148 x 210 |
5"7/8 x 8"1/4 |
A6 |
105 x 148 |
4"1/8 x 5"7/8 |
A7 |
52 x 74 |
2"7/8 x 8"1/4 |
A8 |
148 x 210 |
2"1/8 x 2"7/8 |
1/3A4 (DL) |
99 x 210 |
3"7/8 x 8"1/4 |
1/4A4(Qtr.A4) |
74 x 210 |
2"7/8 x 8"1/4 |
Imperial Sizes |
||
Inch Size |
Size in mm |
Paper Name |
20" x 30" |
508 x 762 |
Double Crown |
30" x 40" |
762 x 1016 |
Quad or Quad Crown |
25" x 40" |
635 x 1016 |
Double Royal |
40" x 60" |
1016 x 1524 |
4 Sheet or Double Quad |
1200 x 1800 |
6 Sheet or Six Sheet |
|
B Series Sizes |
||
Name |
Size in mm |
Size in Inches |
B2 |
500 x 700 |
19"3/5 x 27"1/2 |
B1 |
700 x 1000 |
27"1/2 x 39"1/3 |
B0 |
1000 x 1400 |
39"1/3 x 55"1/8 |
To calculate in cm use mm above and move the decimal point one space to the left: Eg. 210mm is 21cm. All poster frame sizes are defined by the paper insert size. The external frame size is always slightly larger. The visible area is slightly less than the paper size. Do not print critical content too near the edge of the page!
Metric paper sizes are known as International Standard (ISO 216) or DIN (German Standard) paper sizes. They are used in most of the countries in the world - the most important exception being North America. In United Kingdom a few 'inch' sizes are used alongside metric sizes. However US 'letter' and 'legal' sizes are never used - they are universally replaced by A4 size.
As with other UK suppliers, Red17 do not stock frames to suit the standard North American paper sizes. Sizes are: Letter size: 8 1/2in x 11in (216 x 279mm) Similar to A4 (but wider and shorter) / Legal size: 8 1/2in x 14in (216 x 356mm) Tabloid: 11in x 17in (279 x 432mm) - Similar to A3 (but narrower and taller) Ledger is the landscape version of Tabloid.
This is the everyday paper size commonly used for general printing, business stationery sets, publications, brochures, leaflets and so on.
The scale can get a little confusing as the bigger the number the smaller the sheet is. To get an idea of the scales have a look at the diagram below with a dimensions guide for reference.
All A sizes are scaled directly in proportion with each other, i.e:
This is a less common paper size and is much larger that the A series, normally used for posters and wall charts. This system is useful for enlarging and reducing documents and as with the A series paper sizes are measured and rounded to the nearest millimetre.
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