Square Inch is an area unit used to describe surface size, land coverage or geometric sections.
The square inch follows from the international inch of exactly 25.4 mm (1959), so 1 in² is exactly 6.4516 cm².
Measurement system: Metric, imperial and land-measurement area usage. SI equivalent: 1 in² = 0.00064516 m².
Square Inch facts
- Unit name
- Square Inch
- Symbol
- in²
- Category
- Area
- Measurement system
- Metric, imperial and land-measurement area usage
- SI equivalent
- 1 in² = 0.00064516 m²
- Common uses
- Land records, floor area, geometry and engineering sections
Definition of the square inch
Square Inch is an area unit used to describe surface size, land coverage or geometric sections.
Measurement system and SI relationship
Metric, imperial and land-measurement area usage
SI equivalent: 1 in² = 0.00064516 m²
History of the square inch
The square inch follows from the international inch of exactly 25.4 mm (1959), so 1 in² is exactly 6.4516 cm².
Where is the square inch used?
Land records, floor area, geometry and engineering sections