SizeKit

SizeKit reference

RD1 Size

Find RD1 size in mm, cm, inches, pixels, and common DPI values.

RD1 size is 546 x 787 mm, or 21.5 x 30.98 in. At 300 DPI, RD1 is 6449 x 9295 px.

Immediate answer

RD1 at a glance

Use these defaults for quick design, print, or layout decisions.

Compare group
Millimeters 546 x 787 mm physical size
Inches 21.5 x 30.98 in rounded
Pixels at 300 DPI 6449 x 9295 px print-ready default

SizeKit

Use RD1 for

Choose the page path based on the next decision, not on calculator settings.

CMP Compare nearby sizes Open related sizes before choosing a format.

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RD1 key dimensions

The same values in compact cards for scanning.

Millimeters
546 x 787
mm
Centimeters
54.6 x 78.7
cm
Inches
21.5 x 30.98 in
rounded
300 DPI
6449 x 9295 px
pixels

SizeKit

More China sizes

Open nearby size pages without going back to the table.

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All size pages

12 sizes
China / Chinese D D4 188 x 260 mm 7.4 x 10.24 in China / Chinese D D5 130 x 184 mm 5.12 x 7.24 in China / Chinese D D3 264 x 376 mm 10.39 x 14.8 in China / Chinese D D2 380 x 528 mm 14.96 x 20.79 in China / Chinese D D1 532 x 760 mm 20.94 x 29.92 in China / Chinese D D0 764 x 1064 mm 30.08 x 41.89 in China / Chinese D D6 92 x 126 mm 3.62 x 4.96 in China / Chinese RD RD4 196 x 273 mm 7.72 x 10.75 in China / Chinese RD RD5 136 x 196 mm 5.35 x 7.72 in China / Chinese RD RD3 273 x 393 mm 10.75 x 15.47 in China / Chinese RD RD2 393 x 546 mm 15.47 x 21.5 in China / Chinese RD RD0 787 x 1092 mm 30.98 x 42.99 in

SizeKit

RD1 pixel table

Common DPI values for designers and print workflows. Use the bottom calculator bar for custom DPI or orientation.

DPIPortrait pixelsLandscape pixels
72 DPI1548 x 2231 px2231 x 1548 px
96 DPI2064 x 2974 px2974 x 2064 px
150 DPI3224 x 4648 px4648 x 3224 px
300 DPI6449 x 9295 px9295 x 6449 px
600 DPI12898 x 18591 px18591 x 12898 px

SizeKit

Formula

SizeKit uses a transparent rounding rule.

pixels = round((millimeters / 25.4) x DPI). Inches = millimeters / 25.4.

SizeKit

FAQ

Quick answers for this paper size.

What is RD1 size in inches?

RD1 is 21.5 x 30.98 in when rounded to two decimals.

What is RD1 at 300 DPI?

RD1 at 300 DPI is 6449 x 9295 px.

Can I switch to landscape?

Yes. Use the bottom calculator and choose landscape to swap width and height.

SizeKit

Related sizes

Compare nearby sizes before choosing a layout.

>

RD2

Related size: 393 x 546 mm.
>

RD0

Related size: 787 x 1092 mm.