ISO 216 — B series
B1 size
707 × 1000 mm
27.83 × 39.37 in · 70.7 × 100 cm
B1 measures 707 × 1000 mm (70.7 × 100 cm; 27.83 × 39.37 in). At 300 DPI that is 8350 × 11811 pixels.
Millimetres
707 × 1000 mm
Centimetres
70.7 × 100 cm
Inches
27.83 × 39.37 in
Points (pt)
2004 × 2835 pt
B1 in pixels
| DPI | Pixels (portrait) | Typical use |
|---|---|---|
| 72 | 2004 × 2835 | Legacy screen standard, PDF points |
| 96 | 2672 × 3780 | Screens, CSS pixels |
| 150 | 4175 × 5906 | Everyday printing |
| 300 | 8350 × 11811 | Print quality |
Adjacent sizes
FAQ — B1
What size is B1 in centimetres?
B1 is 70.7 × 100 cm (707 × 1000 mm) in portrait orientation.
How many pixels is B1?
It depends on the resolution: at 300 DPI (print) B1 is 8350 × 11811 pixels; at 96 DPI (screen) it is 2672 × 3780 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 B0 in half and you get B1. That is why documents scale between sizes without distortion.
What is B1 used for?
Posters, displays.