ISO 216 — B series
B4 size
250 × 353 mm
9.84 × 13.90 in · 25 × 35.3 cm
B4 measures 250 × 353 mm (25 × 35.3 cm; 9.84 × 13.90 in). At 300 DPI that is 2953 × 4169 pixels.
Millimetres
250 × 353 mm
Centimetres
25 × 35.3 cm
Inches
9.84 × 13.90 in
Points (pt)
709 × 1001 pt
B4 in pixels
| DPI | Pixels (portrait) | Typical use |
|---|---|---|
| 72 | 709 × 1001 | Legacy screen standard, PDF points |
| 96 | 945 × 1334 | Screens, CSS pixels |
| 150 | 1476 × 2085 | Everyday printing |
| 300 | 2953 × 4169 | Print quality |
Adjacent sizes
FAQ — B4
What size is B4 in centimetres?
B4 is 25 × 35.3 cm (250 × 353 mm) in portrait orientation.
How many pixels is B4?
It depends on the resolution: at 300 DPI (print) B4 is 2953 × 4169 pixels; at 96 DPI (screen) it is 945 × 1334 pixels.
How is the B series defined?
Every ISO 216 B-series size has a √2 ≈ 1:1.414 aspect ratio. Each size is half the previous one: fold B3 in half and you get B4. That is why documents scale between sizes without distortion.
What is B4 used for?
Newspapers, sheet music, folders.