Toolman

JIS B8 in pixels

756 × 1075 px

at 300 DPI, the print standard · JIS B8 is 64 × 91 mm · 0.8 megapixels

JIS B8 size in pixels has no single answer, because a pixel is a length only once a resolution decides how many fit in an inch. The JIS B8 pixel size is 756 × 1075 px at the 300 DPI print standard and 181 × 258 px at the 72 DPI screen convention — every resolution in between is in the table below.

JIS B8 at every resolution

A sheet of paper has no pixel size of its own. It has a physical size — 64 × 91 mm, or 2.52 × 3.58 inches — and a pixel count only appears once you choose how many pixels go in each inch.

ResolutionPixelsMegapixelsUncompressed 24-bitUse
72 DPI181 × 2580.0 MP0.1 MBScreen only — visibly soft in print
96 DPI242 × 3440.1 MP0.2 MBScreen only — visibly soft in print
150 DPI378 × 5370.2 MP0.6 MBDrafts, internal documents, large-format viewed from a distance
200 DPI504 × 7170.4 MP1.0 MBAcceptable for office printing
300 DPI756 × 10750.8 MP2.3 MBThe commercial print standard
400 DPI1008 × 14331.4 MP4.1 MBFine detail and small type
600 DPI1512 × 21503.3 MP9.3 MBLine art, technical drawings, archival scanning
1200 DPI3024 × 429913.0 MP37 MBArchival and reproduction work

What the file size means for JIS B8

At 300 DPI an uncompressed JIS B8 is 2.3 MB, and at 600 DPI it is 9.3 MB — four times as much, because doubling the resolution doubles both dimensions. That squaring is the reason large formats become unwieldy so quickly: the same 300 DPI that produces a manageable file at small sizes produces 2.3 MB here.

If a file is going to a printer, ask what they want before choosing. 300 DPI is the safe default and 150 is often enough for anything read from more than arm's length.

Setting up the canvas

Width:      756 px
Height:     1075 px
Resolution: 300 pixels/inch
Colour:     CMYK for print, RGB for screen
Bleed:      3 mm on every edge → 827 × 1146 px

The bleed figure is the one people forget: artwork that runs to the edge must extend 3 mm past it on all four sides, so the working canvas is larger than the finished sheet.

Frequently asked questions

What is JIS B8 in pixels?

There is no single answer — it depends on the resolution. At the print standard of 300 DPI, JIS B8 is 756 × 1075 pixels. On screen at 72 DPI it is only 181 × 258.

What resolution should an JIS B8 document be?

300 DPI for anything going to a commercial printer, which makes the canvas 756 × 1075 pixels. 150 DPI (378 × 537) is acceptable for a draft or an internal document. Large formats read from a distance can go lower — a poster viewed from two metres looks sharp at 150 DPI, and dropping to it here saves 1.7 MB of file.

How big is an JIS B8 file at 300 DPI?

About 2.3 MB uncompressed at 24-bit colour — 756 × 1075 × 3 bytes. Compression brings that down a great deal for flat artwork and very little for a photograph, which is why a print-ready JIS B8 PDF is usually tens of megabytes.

How many megapixels is JIS B8 at 300 DPI?

0.8 megapixels. For comparison, JIS B8 at 600 DPI is 3.3 MP — quadruple, because doubling the resolution doubles both dimensions.

Other sizes in pixels

JIS B8 in millimetres, inches and points · All paper sizes · Screen resolutions