Sizes of common printed items

ApplicationISO A Paper Size
Posters, Technical DrawingsA0
Posters, Technical Drawings, Signs, Flip ChartsA1
Posters, Technical Drawings, Large Excel Tables, Drawings, Desk padsA2
Posters, drawings, Gantt Charts, Spreadsheets and Reference Tables, Newsletters, Desk padsA3
Brochures, Booklets, Posters, Documents, Letters, Fact Sheets, Data Sheets, Presentations, Folders, CataloguesA4
Leaflets, Flyers, Booklets, Books, Postcards, Brochures, Catalogues, NotepadsA5
Postcards, Leaflets, Note pads,A6