ISO B · ISO 216
B5 paper size
A compact ISO B-series sheet larger than A5 and smaller than A4, popular for books, notebooks, manuals, and comfortable handheld reading.
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B5 dimensions in every unit
In portrait orientation, width comes first: 176 mm × 250 mm. Rotate the sheet for landscape orientation and the same measurements reverse.
| Unit | Width | Height |
|---|---|---|
| Millimeters | 176 mm | 250 mm |
| Centimeters | 17.6 cm | 25 cm |
| Inches | 6.93 in | 9.84 in |
| Points | 498.9 pt | 708.7 pt |
Digital artwork
B5 pixel dimensions by DPI
Pixel dimensions depend on output resolution. These values describe the trimmed page only and do not include printer bleed.
| Resolution | Pixel width | Pixel height | Typical use |
|---|---|---|---|
| 72 DPI | 499 px | 709 px | Screen preview |
| 96 DPI | 665 px | 945 px | Screen preview |
| 150 DPI | 1,039 px | 1,476 px | Draft print |
| 300 DPI | 2,079 px | 2,953 px | Quality print |
| 600 DPI | 4,157 px | 5,906 px | High-detail source |
Proportion & comparison
How B5 relates to nearby sizes
ISO B5 is 28 mm wider and 40 mm taller than A5. JIS B5 adds another 6 mm of width and 7 mm of height.
- Portrait ratio
- 1 : 1.4205
- Area
- 0.044 m²
- Orientation
- 176 × 250 mm
Works well for
Common B5 uses
- Books
- Notebooks
- Training manuals
- Workbooks
Check before using
Where it can go wrong
- JIS B5 forms without resizing
- A5 covers at 100% scale
- Printers with no custom-size feed
Regional & printer note
Will a printer recognize B5?
ISO B5 measures 176 × 250 mm. JIS B5, common in Japan, is 182 × 257 mm; printer menus and stationery listings may use either.
Always match the document size, print-driver size, paper tray, and physical sheet. A driver can silently scale a page even when the preview looks correct.
Measurement source
Checked against the defining standard
Paper Size Lab converts the stored millimeter measurements mathematically; it does not round-trip between units. The underlying sheet family is referenced to the standards organization below.
Read ISO 216:2007Questions people ask
B5 paper FAQ
What are the dimensions of B5 paper?
B5 measures 176 × 250 millimeters, 17.6 × 25 centimeters, or 6.93 × 9.84 inches in portrait orientation.
How many pixels is B5 at 300 DPI?
B5 is 2079 × 2953 pixels at 300 DPI before adding bleed.
Is B5 the same as another paper size?
ISO B5 is 28 mm wider and 40 mm taller than A5. JIS B5 adds another 6 mm of width and 7 mm of height.
What is B5 commonly used for?
B5 is commonly used for books, notebooks, training manuals, workbooks. Printer, postal, and finishing requirements still vary.