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Paper Sizes.

The standard for drawing sheet sizes is the A series. The basic size in this series is the A0 size (1189mm x 841mm) which has an area of about 1-m3. The sides of every size in the series are in the ratio Sqrt(2) = 1.414 : 1 and each size is half the area of the next larger size.

Drawing Sheet Size Size in millimetres Size in inches
A0 1189 x 841 46.81 x 33.11
A1 841 x 594 33.11 x 23.39
A2 594 x 420 23.39 x 16.55
A3 420 x 297 16.55 x 11.69
A4 297 x 210 11.69 x 8.27
A5 210 x 148 8.27 x 5.84
A6 148 x 105 5.84 x 4.13


Preferred Scales For Drawings...

The preferred scales are

1:1, 1:2, 1:5, 1:10, 1:20, 1:50, 1:100


BS EN ISO 5457 Drawing Sheet Sizes

Designation Trimmed Sheet Drawing Space +/- 0.5mm Untrimmed sheet +/- 2mm
- Width (mm) Length (mm) Width (mm) Length (mm) Width (mm) Length (mm)
A0 841 1189 821 1159 880 1230
A1 594 841 574 811 625 880
A2 420 594 400 564 450 625
A3 297 420 277 390 330 450
A4 210 297 180 277 240 330


Useful Links On Drawing Sheet Sizes

  1. Paper sizes...Wikipedia Paper size
  2. Drawing Scaled ISO Sheets ...Notes relating to selection of drawing sheet sizes with Autocad
  3. The ISO 'A' Series ...Metrication.com . Background on the basis for the ISO drawing sizes

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Last Updated 25/12/2010