Convert Square Inch to Square Meter

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Conversion Formula:

m² = in² × 0.000645

Convert Square Inch to Square Meter (in² to m²) instantly with accurate, readable results.

Convert between square meters, acres, square feet, hectares, and other common units with our Area Unit Converter. This intuitive unit conversion tool helps you calculate land size, floor space, and surface area across both metric and imperial systems. Whether you're working on real estate, construction, or geography tasks, our area unit conversion calculator ensures precise and instant results.

From unit

Square inch (in²) - Imperial/US area unit

Square inch is an Imperial/US customary unit of area equal to a square 1 inch on a side. Used for small surface areas in manufacturing, displays, and hardware specs.

  • Symbol: in²
  • System: Imperial/US customary
  • Exact relations: 1 in² = (2.54 cm)² = 6.4516 cm² = 0.00064516 m² = 645.16 mm²
  • Other relations: 1 in² = 1/144 ft² ≈ 0.006944444 ft² ≈ 0.000771605 yd²
  • Typical examples: screen area, gasket/washer footprints, cross-sectional areas in inch–pound drawings
To unit

Square meter (m²) - SI unit of area

Square meter is the SI unit of area equal to the area of a square with sides of 1 meter. Used worldwide for measuring floor space, land parcels, and surface areas in science and engineering.

  • Symbol: m²
  • System: SI derived unit
  • Exact relations: 1 m² = 10,000 cm² = 1,000,000 mm² = 1×10⁻⁴ ha
  • Imperial/US equivalents: 1 m² ≈ 10.7639104 ft² ≈ 1.19599005 yd² ≈ 1550.0031 in²
  • Typical examples: apartment room sizes, building floor plans, material coverage (paint, flooring), cross-sectional and surface areas in calculations