in²

What is a Square Inch?

Square Inch is an area unit used to describe surface size, land coverage or geometric sections.

Square Inch is an area unit used to describe surface size, land coverage or geometric sections.

Square Inch became established as a practical area unit in technical, commercial or scientific use.

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

Square Inch became established as a practical area unit in technical, commercial or scientific use.

Where is the square inch used?

Land records, floor area, geometry and engineering sections

Square Inch conversion tools

Other languages

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