Printer Paper Size

US Envelope Paper Sizes Dimensions

#10

#10 Paper Size

Dimensions: 9.49 × 4.09 in (241 × 104 mm)

241 × 104mm

9.49 × 4.09 in

#10 is a widely used paper size for Standard business correspondence, invoices, account statements, and everyday office mail. It's part of the US Envelope Paper Sizes standard.

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US Envelope Paper SizesUS Envelope Paper SizesWidely used

241 mm

#10

104 mm

What size is #10 paper?

An #10 piece of paper measures 241 × 104 mm or 9.49 × 4.09 inches. It is part of the US Envelope Paper Sizes standard.

Units	Width × Height
Metric millimeters (mm)	241 × 104 mm
Metric centimeters (cm)	24.10 × 10.40 cm
Metric meters (m)	0.241 × 0.104 m
Imperial inches (in)	9.49 × 4.09 in
Typographic points (1/72 inch) (pt)	683.15 × 294.80 pt
Typographic picas (1/6 inch) (pc)	56.93 × 24.57 pc
Pixels at 300 DPI (px)	2,846 × 1,228 px

#10 is part of the us envelope paper sizes standard. US envelope sizes are commonly used in the United States for business and personal correspondence. The most common is the #10 envelope used for standard business letters.

Also called: No. 10 Envelope, Number 10 Envelope, Standard Business Envelope.

Quick facts

Size (mm)241 × 104 mm
Size (inches)9.49 × 4.09 in
Aspect ratio1 : 0.43
StandardUS Envelope Paper Sizes
Common useStandard business correspondence, invoices, account statements

Compare #10 with other sizes

Uses for #10

Standard business correspondence, invoices, account statements, and everyday office mail.

Business correspondence and invoices
Direct-mail campaigns
Statements and remittance envelopes
Greeting and invitation mailings

Loading #10 into a printer

Load #10 envelopes into your printer's manual feed or dedicated envelope tray with the flap facing according to your printer's guidelines. Select "#10 Envelope" in print settings.

What fits in #10?

Match the envelope to the contents: a standard business letter folds in thirds for a #10 envelope, while booklets and catalogues need a larger flat or open-end style.

#10 at common DPI

Pixel dimensions for #10 at popular resolutions. Rounded to whole pixels; physical sheet remains 241 × 104 mm.

96 DPI

911 × 393 px

Standard web & screen resolution

150 DPI

1,423 × 614 px

Medium quality draft printing

300 DPI

2,846 × 1,228 px

High quality commercial print

#10 at 72, 96, 150, 300 and 600 DPI
DPI	Width (px)	Height (px)
72	683	295
96	911	393
150	1,423	614
300	2,846	1,228
600	5,693	2,457

Last reviewed: 14 September 2026

Frequently Asked Questions

What are the dimensions of #10?

#10 measures 241 × 104 mm (9.49 × 4.09 inches).

How many pixels is #10 at 300 DPI?

#10 is 2846 × 1228 pixels at 300 DPI. Changing DPI changes pixel count, not its 241 × 104 mm physical dimensions.

Can my printer take #10?