Side-by-Side Comparison
North American (ANSI & Arch)
US Letter vs. US Tabloid / Ledger
Comparing 2 standards across 10 specifications. 10 key differences identified.
Comparing:
US Letter
US Tabloid / Ledger
US Letter (ANSI A) is the standard business and consumer paper size in the United States, Canada, and parts of Mexico, measuring exactly 8.5 × 11.0 inches (215.9 × 279.4 mm). Standardized under ANSI/ASME Y14.1, it is slightly wider and shorter than the international ISO 216 A4 format.
US Tabloid / Ledger (ANSI B) is an ANSI/ASME Y14.1 standard paper size measuring 11.0 × 17.0 inches (279.4 × 431.8 mm). Formed by placing two US Letter sheets side-by-side, it is referred to as 'Tabloid' in portrait orientation (used for newspapers and newsletters) and 'Ledger' in landscape orientation (used for accounting spreadsheets and engineering schematics).
Specification Comparison Table
10 Parameters| Parameter / Spec | ||
|---|---|---|
|
Width × Height (Imperial)
|
8.50 × 11.00 in | 11.00 × 17.00 in |
|
Width × Height (Metric)
|
215.9 × 279.4 mm | 279.4 × 431.8 mm |
|
ANSI Series Designation
|
ANSI A (Base engineering format) | ANSI B (Double ANSI A) |
|
Aspect Ratio
|
1 : 1.2941 (17 : 22 — not √2) | 1 : 1.5455 (11 : 17) |
|
Comparison to ISO A4
|
US Letter is 5.9 mm wider and 17.6 mm shorter than A4 (210 × 297 mm) | — |
|
Standard Office Weight
|
20 lb Bond (approx. 75 gsm) or 24 lb Bond (approx. 90 gsm) | — |
|
Matching Envelope Standard
|
US #10 Envelope (4.125 × 9.50 in / 104.8 × 241.3 mm) | — |
|
Halving Relationship
|
— | Cut in half across length yields 2 sheets of US Letter (ANSI A) |
|
International ISO Equivalent
|
— | A3 (297 × 420 mm — slightly wider and shorter) |
|
Primary Applications
|
— | Community newspapers, corporate financial accounting ledgers, CAD engineering diagrams, folded Letter brochures |