US Paper Sizes Explained

US paper sizes are based on traditional imperial measurements and differ entirely from the ISO 216 standard. They are used primarily in the United States, Canada, and Mexico. The most common size is Letter (8.5 × 11 in).

📊 US Paper Size Quick Facts:
• Most Common: Letter (8.5 × 11 in)
• Standard for Legal: Legal (8.5 × 14 in)
• Newspaper Size: Tabloid (11 × 17 in)
• Ratio: No consistent √2 ratio (unlike ISO 216)

📏 Complete US Paper Size Dimensions

SizeInchesMillimetresCentimetres
Letter8.5 × 11 in216 × 279 mm21.6 × 27.9 cm
Legal8.5 × 14 in216 × 356 mm21.6 × 35.6 cm
Tabloid11 × 17 in279 × 432 mm27.9 × 43.2 cm
Ledger17 × 11 in432 × 279 mm43.2 × 27.9 cm
Executive7.25 × 10.5 in184 × 267 mm18.4 × 26.7 cm
Junior Legal5 × 8 in127 × 203 mm12.7 × 20.3 cm
Half Letter5.5 × 8.5 in140 × 216 mm14.0 × 21.6 cm
Government Letter8 × 10.5 in203 × 267 mm20.3 × 26.7 cm
Government Legal8.5 × 13 in216 × 330 mm21.6 × 33.0 cm

🔁 Convert Between US Sizes

🖥️ US Sizes in Pixels (300 DPI)

📏 US Letter vs A4

The most common question is the difference between US Letter and A4:

  • US Letter: 8.5 × 11 in (216 × 279 mm) — slightly wider, slightly shorter
  • A4: 210 × 297 mm (8.27 × 11.69 in) — slightly narrower, slightly taller
  • Area: A4 has a slightly larger total area
  • Usage: Letter is standard in the US/Canada; A4 is standard globally

Read the full A4 vs Letter comparison →

Common Uses of US Paper Sizes

  • Letter: Standard documents, letters, forms, business reports
  • Legal: Legal contracts, court documents, real estate paperwork
  • Tabloid / Ledger: Newspapers, menus, small posters, diagrams
  • Executive: Personal stationery, executive reports, small booklets
  • Government Letter / Legal: Government correspondence and forms

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