# item.guide
Side-by-Side Comparison North American (ANSI & Arch)

ANSI C vs. ANSI E

Comparing 2 standards across 6 specifications. 6 key differences identified.

Comparing:
ANSI C
ANSI E

ANSI C is an engineering paper standard defined by ANSI/ASME Y14.1, measuring 17.0 × 22.0 inches (431.8 × 558.8 mm). Formed by joining two ANSI B (Tabloid) sheets or four ANSI A (Letter) sheets, it is the entry format for mechanical CAD assembly drawings and electrical wiring schematics.

View full ANSI C spec sheet →

ANSI E is the largest standardized engineering sheet size defined by ANSI/ASME Y14.1, measuring 34.0 × 44.0 inches (863.6 × 1117.6 mm). Equal to 16 US Letter sheets, it is standard for full-scale commercial aerospace wing spars, naval ship general arrangements, and highway interchange profiles.

View full ANSI E spec sheet →

Specification Comparison Table

6 Parameters
Parameter / Spec
Width × Height (Imperial)
17.00 × 22.00 in 34.00 × 44.00 in
Width × Height (Metric)
431.8 × 558.8 mm 863.6 × 1117.6 mm
ANSI Hierarchy
ANSI C = 2 × ANSI B (Tabloid) = 4 × ANSI A (Letter) ANSI E = 2 × ANSI D = 4 × ANSI C = 8 × ANSI B = 16 × ANSI A
Aspect Ratio
1 : 1.2941 (17 : 22 — identical aspect ratio to ANSI A) 1 : 1.2941 (17 : 22)
International ISO Equivalent
A2 (420 × 594 mm) A0 (841 × 1189 mm)
Primary Applications
Mechanical component CAD drawings, electrical control panel schematics, industrial plumbing diagrams Aerospace structural drawings, naval ship construction plans, state highway transit maps