B1 Paper Size
B1 paper size measures 707 × 1000 mm. The Dimensions of B1 Paper are 27.83 by 39.37 inches, 70.7 by 100.0 centimetres, 8350 by 11811 pixels at 300 DPI, and 2004 by 2835 points. It is half of B0. Its most common use is standard large posters.
B1 measures 707 millimetres wide and 1000 millimetres tall.
Dimensions of B1 Paper
| Unit | Width | Height | Width × height | Copy |
|---|---|---|---|---|
| Millimetres (mm) | 707 | 1000 | 707 × 1000 mm | |
| Centimetres (cm) | 70.7 | 100.0 | 70.7 × 100.0 cm | |
| Metres (m) | 0.707 | 1 | 0.707 × 1 m | |
| Inches (in) | 27.83 | 39.37 | 27.83 × 39.37 in | |
| Feet (ft) | 2.32 | 3.28 | 2.32 × 3.28 ft | |
| Points (pt) | 2004 | 2835 | 2004 × 2835 pt | |
| Picas (pc) | 167 | 236.2 | 167 × 236.2 pc | |
| Pixels at 72 DPI | 2004 | 2835 | 2004 × 2835 px | |
| Pixels at 150 DPI | 4175 | 5906 | 4175 × 5906 px | |
| Pixels at 300 DPI | 8350 | 11811 | 8350 × 11811 px | |
| Pixels at 600 DPI | 16701 | 23622 | 16701 × 23622 px |
Pixel counts follow from the resolution: pixels = millimetres ÷ 25.4 × DPI. More on the DPI and pixels page.
B1 Paper Format
B1 is half of B0 and folds in half to B2. One B1 sheet tiles into 2 × B2, 4 × B3, 8 × B4. Put B1 next to another size in the comparison tool.
B1 Size in Millimeters (mm)
B1 is 707 × 1000 mm (707 mm wide, 1000 mm tall). Millimetres are the base unit of ISO 216, so these are the exact figures paper mills and print shops cut to. Page-setup dialogs outside the US expect ISO B-series sizes entered in mm.
B1 Size in Centimeters (cm)
B1 is 70.7 × 100.0 cm. Centimetres are the handy unit for checking a sheet against a school ruler or giving a rough size; the figure is the millimetre value divided by ten.
B1 Size in Inches
B1 is 27.83 × 39.37 inches. Inches come up when B1 is opened in US-configured software or lined up against the nearest A size. One inch is fixed at 25.4 mm.
B1 Size in Pixels
At 300 DPI B1 is 8350 × 11811 px; at 72 DPI it is 2004 × 2835 px. Pixel dimensions are what you type into the new-document box in Photoshop, GIMP or Figma, and they scale with the DPI you choose.
B1 in Pixels at 72 DPI (Screen)
B1 is 2004 × 2835 px at 72 DPI. This is the legacy screen resolution, used for on-screen mockups, web previews and wireframes where physical print size is not the point.
B1 in Pixels at 300 DPI (Print)
B1 is 8350 × 11811 px at 300 DPI. 300 DPI is the print-quality benchmark, so set an B1 canvas to this pixel count for anything going to a commercial or a good home printer.
B1 Size in Points (pt)
B1 is 2004 × 2835 points. Points are the unit of PDF, InDesign and LaTeX page geometry, where 72 points make one inch. A page set to 2004 by 2835 pt exports as B1.
B1 Shape and Area
| Aspect ratio | 1 : 1.414 (√2) |
|---|---|
| Area | 0.707 m² · 707,000 mm² |
| Diagonal | 1224.7 mm · 48.22 in |
| ISO 216 tolerance | ± 3 mm each side |
| Governing standard | ISO 216:2007 |
Frequently Asked Questions
What is B1 Paper Size?
A piece of B1 paper measures 707 × 1000 mm (27.83 × 39.37 in). It is one of the ISO 216 B-series sizes, made by folding B0 in half, and it folds again to make B2.
What are the Uses of B1 Paper?
B1 is used for cinema and event posters, political and campaign posters, retail window displays.
How long is a piece of B1 paper?
B1 is 1000 mm long on the longer edge and 707 mm on the shorter edge, which is 100.0 cm by 70.7 cm.
How long is B1 paper in inches?
The long edge of B1 is 39.37 inches and the short edge is 27.83 inches.
How long is a piece of B1 paper in cm?
B1 is 100.0 cm long by 70.7 cm wide.
B Paper Sizes
✓ Dimensions per ISO 216:2007; unit values derived by formula. Reviewed . Editorial Process →