ISO Paper Sizes collects practical CAD plotting guidance for this topic within Paper Sizes & Margins. Use these articles for setup, verification, troubleshooting and reliable final output.
ISO A-series sheets are the standard metric family used in many CAD workflows. Each step from A0 to A4 halves the area of the previous sheet, making title-block families and reduced prints easier to standardize.
A0 is 841 × 1189 mm. In AutoCAD, select the real printer or PDF device first, then choose A0 from that device’s Paper Size list and make sure the Layout title block matches the physical sheet.
A1 is 594 × 841 mm. In AutoCAD, select the real printer or PDF device first, then choose A1 from that device’s Paper Size list and make sure the Layout title block matches the physical sheet.
A2 is 420 × 594 mm. In AutoCAD, select the real printer or PDF device first, then choose A2 from that device’s Paper Size list and make sure the Layout title block matches the physical sheet.
A3 is 297 × 420 mm. In AutoCAD, select the real printer or PDF device first, then choose A3 from that device’s Paper Size list and make sure the Layout title block matches the physical sheet.
A4 is 210 × 297 mm. In AutoCAD, select the real printer or PDF device first, then choose A4 from that device’s Paper Size list and make sure the Layout title block matches the physical sheet.