📄 Tableau des tailles : Papier série A
Papier série A : Documents de bureau, Lettres et rapports, Impression quotidienne. Les centimètres sont affichés par défaut ; changez d’unité ci-dessous.
| Catégorie | Taille (cm) | Surface | Usages |
|---|---|---|---|
| A0 | 84.1 × 118.9 cm | 9,999.49 cm² | Documents de bureau, Lettres et rapports, Impression quotidienne |
| A1 | 59.4 × 84.1 cm | 4,995.54 cm² | Documents de bureau, Lettres et rapports, Impression quotidienne |
| A2 | 42 × 59.4 cm | 2,494.8 cm² | Documents de bureau, Lettres et rapports, Impression quotidienne |
| A3 | 29.7 × 42 cm | 1,247.4 cm² | Documents de bureau, Lettres et rapports, Impression quotidienne |
| A4 | 21 × 29.7 cm | 623.7 cm² | Documents de bureau, Lettres et rapports, Impression quotidienne |
| A5 | 14.8 × 21 cm | 310.8 cm² | Documents de bureau, Lettres et rapports, Impression quotidienne |
| A6 | 10.5 × 14.8 cm | 155.4 cm² | Documents de bureau, Lettres et rapports, Impression quotidienne |
| A7 | 7.4 × 10.5 cm | 77.7 cm² | Documents de bureau, Lettres et rapports, Impression quotidienne |
| A8 | 5.2 × 7.4 cm | 38.48 cm² | Documents de bureau, Lettres et rapports, Impression quotidienne |
| A9 | 3.7 × 5.2 cm | 19.24 cm² | Documents de bureau, Lettres et rapports, Impression quotidienne |
| A10 | 2.6 × 3.7 cm | 9.62 cm² | Documents de bureau, Lettres et rapports, Impression quotidienne |
À propos de Papier série A
Papier série A : Documents de bureau, Lettres et rapports, Impression quotidienne.
The A series is derived from one area and one ratio, not a list of arbitrary numbers. A0 has an area of exactly one square metre and a fixed 1:√2 ratio, which gives 841 × 1189 mm after rounding. A1 is half of A0 cut across the long side, and A4 is A0 folded four times: 210 × 297 mm.
The practical benefit is that folding preserves the shape. A4 folds to A5, A5 to A6; two A4 sheets side by side make A3, and four make A2. For leaflets, booklets and inner pages, layouts built on this relationship keep their proportions after trimming.
The A series is not the same system as Chinese K-sheets or US Letter. 16K is usually a little smaller than A4, around 195 × 270 mm or 210 × 285 mm; Letter is 215.9 × 279.4 mm, wider and shorter than A4. Printing a Letter PDF on A4 without scaling clips the right edge, so confirm the paper system and scaling before output.
Print work also needs tolerance and process settings. Add 3 mm bleed on each edge and keep text 3–5 mm inside the trim; A4 with bleed is 216 × 303 mm. 300 DPI is the normal target for photos and text, and paper weight controls feel and thickness: 80 gsm is office paper, 120–170 gsm is a leaflet, and 250–350 gsm is a card or cover.
Le papier ISO de la série A utilise un rapport 1:√2 : chaque format a la moitié de la surface du précédent, si bien qu'une feuille A4 (210 × 297 mm) se plie en A5 et s'agrandit en A3.
La série B sert aux affiches, aux livres et aux enveloppes ; les enveloppes C sont dimensionnées pour qu'une feuille A4 pliée tienne dans une C5. Les formats chinois K (16K, 8K, 32K) restent courants dans les livres et les carnets.