Reference library

B6 Paper Size

B6 measures 125 x 176 mm, 12.5 x 17.6 cm, or 4.92 x 6.93 in. See pixel dimensions by DPI, aspect ratio, bleed setup, comparisons, and related tools.

Last checked: 2026-05-01

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At a glance

B6 is 125 x 176 mm, 12.5 x 17.6 cm, or 4.92 x 6.93 in. At 300 DPI, B6 is 1476 x 2079 px.

Last checked: 2026-05-01 Source: ISO 216:2007 Found a spec change? Send correction.

How we calculate this

Methodology and source handling

We convert physical sizes to inches, multiply by the selected DPI/PPI value, and round to whole pixels.

Methodology Editorial policy

Quick answer

Copy-ready answer

B6 is 125 x 176 mm, 12.5 x 17.6 cm, or 4.92 x 6.93 in. At 300 DPI, B6 is 1476 x 2079 px.

125 x 176 mm

Dimensions and specs

Millimeters	125 x 176 mm
Centimeters	12.5 x 17.6 cm
Inches	4.92 x 6.93 in
300 DPI pixels	1476 x 2079 px
Aspect ratio	1:1.408
Standard family	ISO B Series

Pixels

Pixel dimensions by DPI

DPI / PPI	Width	Height	Use
72 DPI	354 px	499 px	Screen or draft reference density
96 DPI	472 px	665 px	Screen or draft reference density
150 DPI	738 px	1039 px	Screen or draft reference density
300 DPI	1476 px	2079 px	Common high-quality print setup
600 DPI	2953 px	4157 px	High-resolution archival or print workflow

Formula

How to calculate this size

Pixel formulapixels = millimeters / 25.4 x PPI

125 mm x 300 PPI = 1,476 px wide.

Trim result1,476 x 2,079 px

Use this when the artwork stops at the finished edge.

Bleed result1,547 x 2,150 px

Add 3 mm per side before calculating pixels when artwork reaches the edge.

Common mistakes

Avoid these b6 paper size problems

Mixing screen pixels with print quality

A paper size needs a PPI target before pixels mean anything for print.

Forgetting orientation

Portrait and landscape use the same dimensions, but width and height swap in the export.

Adding bleed to a paper reference

Paper pages show trim size first; add bleed only when the design prints to the edge.

Calculator

Calculate pixels and bleed

Enter any DPI to calculate the pixel dimensions for this physical size.

Compare

Compare B6 Paper Size

Open a curated comparison or send both sizes into the compare tool with a fragment URL.

compare tool B6 vs B5

B6 Paper Size: 125 x 176 mm
B5: 176 x 250 mm

50% smaller than B5 Paper Size. 0.0062 decimal ratio difference compare tool B6 vs B7

B6 Paper Size: 125 x 176 mm
B7: 88 x 125 mm

100% larger than B7 Paper Size. 0.0062 decimal ratio difference compare tool B6 vs A4

B6 Paper Size: 125 x 176 mm
A4: 210 x 297 mm

64.7% smaller than A4 Paper Size in Pixels, Millimeters, Centimeters and Inches. 0.0032 decimal ratio difference compare tool B6 vs US Letter

B6 Paper Size: 125 x 176 mm
US Letter: 215.9 x 279.4 mm

63.5% smaller than US Letter Paper Size. 0.0625 decimal ratio difference

B6 belongs to the ISO B Series family. Use this reference for print setup, document layout, template sizing, pixel conversion, and comparisons with nearby paper sizes. Pixel dimensions are calculated from the physical size and selected DPI.

Workflow

Use B6 Paper Size in a finished file

Confirm the physical size

Copy the millimeter, centimeter, or inch dimensions for the selected paper standard.

Choose PPI

Use 300 PPI for most sharp print exports, or match the printer requirement.

Calculate pixels

Multiply inches by PPI, then add bleed only when artwork reaches the trimmed edge.

Related pages and tools

same series B5 paper size same series B7 paper size common alternative A4 paper size common alternative US Letter paper size comparison B6 vs B5 comparison B6 vs B7 tool DPI calculator tool Print bleed calculator tool Compare sizes tool

Same branch

Nearby pages

A4 Paper Size in Pixels, Millimeters, Centimeters and Inches A5 Paper Size Legal Paper Size US Letter Paper Size A0 Paper Size A1 Paper Size A10 Paper Size A2 Paper Size

FAQ

Common questions

What is the exact B6 size?

B6 measures 125 x 176 mm, 12.5 x 17.6 cm, or approximately 4.92 x 6.93 in.

What is B6 in pixels at 300 DPI?

B6 at 300 DPI is 1476 x 2079 px when rounded to the nearest whole pixel.

What aspect ratio is B6?

B6 has an aspect ratio of about 1:1.408 based on its 125 x 176 mm physical dimensions.

Should I add bleed to a B6 design?

For print work, a common starting point is 3 mm bleed on each side, making the document 131 x 182 mm before trimming. Confirm final bleed with your printer.

References

Sources and references

ISO 216 physical dimensions. Pixel values are calculated from millimeters / 25.4 x DPI and rounded to whole pixels.

ISO 216:2007
Used for ISO A and B series physical paper dimensions.
W3C CSS Values and Units Module
Used for CSS unit definitions, absolute unit relationships, and CSS px behavior.

Last checked: 2026-05-01