What Is 8×11 Paper Size? | The Standard You Meant

The “8×11″ paper size does not exist as a standard; what people almost always mean is 8.5″ × 11” US Letter (ANSI A), the default for home and office printing in North America.

One wrong measurement sends you hunting for a paper size that doesn’t ship from any mill. The number you typed — 8 by 11 — is missing half an inch that makes all the difference. The real standard is 8.5 inches by 11 inches, called US Letter or ANSI A, and it’s what fills every office printer tray in the United States, Canada, Mexico, and the Philippines. Here is the exact reference, how it compares to international sizes, and what to do when your print job doesn’t fit.

What Are The Exact Dimensions Of 8.5×11 Paper?

The official size is 8.5 inches by 11 inches. In metric that works out to 215.9 millimeters by 279.4 millimeters — rounded to 216 × 279 mm on most packaging and printer menus. In centimeters it is 21.59 cm × 27.94 cm.

The aspect ratio is 1.294, which is not the √2 ratio of A4 paper — that matters when you try to scale between standards. At 300 ppi, a scanned document fills 2551 × 3295 pixels; at 72 ppi it is 612 × 792 pixels. One sheet covers 93.5 square inches or 0.0603 square meters.

Official Standard Names And Codes

This size carries two official names depending on the governing body. The American National Standards Institute (ANSI) codes it as ANSI A under the standard ANSI/ASME Y14.1. In everyday use it is called US Letter or just Letter — though “Letter” can default to A4 on printers set to non-US locales. When you need precision, choose “US Letter” in the dialog.

Where 8.5×11 Is Used And Where It Isn’t

This is the default paper size for business correspondence, reports, academic papers, invoices, resumes, and general office printing in the United States, Canada, Mexico, and the Philippines. You will also find it used across parts of Latin America. Most of Europe, Asia, and Australia use A4 (210 × 297 mm) instead. Every office printer and photocopier sold in North America ships with 8.5×11 as the default setting.

US Letter Vs A4: The Critical Differences

The practical consequence is about clipping. If you print an A4 document on US Letter paper without changing the scale, the bottom 6% of the page gets cut off — roughly two lines of text. To fit A4 content onto a Letter sheet, set your print scale to 94%.

Common Mistakes People Make With Paper Sizes

No standard paper is cut at exactly 8 inches by 11 inches. Another common mix-up is confusing Letter (8.5×11) with Legal (8.5×14), which is three inches longer. And because Letter’s ratio (1.294) does not match the √2 scaling of the A series, you cannot simply scale A4 to Letter by percentage without checking the fit. Tabloid (11×17) is double the area of Letter, not a smaller cousin.

If you need to stock up on this paper, check out our roundup of top-rated options: best 8×11 paper picks for every budget.

How To Set Paper Size In Your Print Dialog

The exact menu path varies by operating system and app, but the logic is consistent. On Windows, open File > Print, then select Printer Properties or Preferences. Navigate to Page Setup or Paper/Quality, find the Paper Size dropdown, and choose Letter (8.5″ x 11″). If you are printing an A4 document on Letter paper, look for a Scale to 94% option. On macOS, open File > Print, locate the Paper Size dropdown, and select US Letter — not just “Letter,” which can default to A4 in non-US regional settings. Keep scale at 100% unless your document is A4. Most US copiers are preset to Letter already, but you can press the Paper Size button and toggle to Legal or Tabloid as needed.

Price Context: What Does A Ream Cost?

A standard ream of 20-pound white paper contains 500 sheets. Typical retail prices in the US range from $8.00 to $15.00 per ream, with common brands like HP, Amazon Basics, Hammermill, and Neenah Paper dominating store shelves. Bulk buying often drops the per-ream price below $7.00.

What The Reader Should Do Next

Write down “8.5 × 11” as your shopping reference. When you buy paper, verify the package label says “Letter” or “8.5 x 11” — not “Legal” and not “A4.” When you print, confirm your dialog says “US Letter” to avoid a scaling mismatch, and always check the print preview before hitting print.

A standard US ream (500 sheets) of 20lb letter paper typically runs $8–$15 from major retailers. Brand options include HP, Amazon Basics, Hammermill, and Neenah.