Square Inch

in²

Commonly Used

The square inch represents the area of a square with sides of 1 inch. It's commonly used in technical specifications, plans, and construction materials in English-speaking countries.

Quick Converter

1 in2 = cm2

Controls display format. Very small or very large numbers will be shown in scientific notation (e.g., 1.5e-6).

Square Inch (in²)

The square inch represents the area of a square with sides of 1 inch. It’s commonly used in technical specifications, plans, and construction materials in English-speaking countries.

Characteristics

  • Imperial system unit
  • 1 in² = 645.16 mm²
  • 1 in² = 6.4516 cm²
  • Common in: construction plans, building specifications, technical drawings

Conversions

  • 1 in² = 645.16 mm²
  • 1 in² = 6.4516 cm²
  • 1 in² = 0.00694444 square feet
  • 144 in² = 1 square foot
  • 1 in² = 0.000771605 square yards

Related Units

Used In Regions

US UK Canada
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