Convert Square Inch to Rood

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Conversion Formula:

ro = in² × 0.000001

Convert Square Inch to Rood (in² to ro) 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

Rood (rood) - traditional land area

Rood is a historical Imperial/US customary unit of area equal to one quarter of an acre. Used in older land records, field measurements, and some property descriptions.

  • Symbol: none standardized (written as “rood”)
  • System: Imperial/US customary (historic)
  • Exact relations: 1 rood = 1/4 acre = 40 square rods (perches) = 2.5 square chains
  • Other relations: 1 rood = 1 furlong × 1 rod = 10,890 ft² = 1,210 yd²
  • Metric equivalents (exact): 1 rood = 1011.7141056 m²
  • Typical examples: historical parcel sizes in deeds; subdivision remnants expressed as roods and perches