ISO 216 — A series
A1 size
594 × 841 mm
23.39 × 33.11 in · 59.4 × 84.1 cm
A1 measures 594 × 841 mm (59.4 × 84.1 cm; 23.39 × 33.11 in). At 300 DPI that is 7016 × 9933 pixels.
Millimetres
594 × 841 mm
Centimetres
59.4 × 84.1 cm
Inches
23.39 × 33.11 in
Points (pt)
1684 × 2384 pt
A1 in pixels
| DPI | Pixels (portrait) | Typical use |
|---|---|---|
| 72 | 1684 × 2384 | Legacy screen standard, PDF points |
| 96 | 2245 × 3179 | Screens, CSS pixels |
| 150 | 3508 × 4967 | Everyday printing |
| 300 | 7016 × 9933 | Print quality |
Adjacent sizes
FAQ — A1
What size is A1 in centimetres?
A1 is 59.4 × 84.1 cm (594 × 841 mm) in portrait orientation.
How many pixels is A1?
It depends on the resolution: at 300 DPI (print) A1 is 7016 × 9933 pixels; at 96 DPI (screen) it is 2245 × 3179 pixels.
How is the A series defined?
Every ISO 216 A-series size has a √2 ≈ 1:1.414 aspect ratio. Each size is half the previous one: fold A0 in half and you get A1. That is why documents scale between sizes without distortion.
What is A1 used for?
Posters, flip charts, drawings.