The squareinch ( sq in or in²) is a unit of area from the British and American measurement system. One square inch corresponds to the area of a square with a side length of one inch. It is a very small unit of area and is often used in applications where precision is important, such as engineering, construction or materials processing. One square inch corresponds to 0.00064516 m².

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Although the metric system dominates in many scientific and international contexts, the square inch remains an essential unit, especially when it comes to detail-oriented work and measurements.

With our online calculator, you can easily convert square inches to other units of area, such as square meters, square centimeters, square yards or square feet. Simply enter the desired value and our tool will show you the corresponding values in other units.

Conversion table

Here is a conversion table for square inches:

UnitConversion factorEquivalent value in this unit (based on 1 sq in)
Square meter (m²)0,000645160,00064516 m²
Square centimeter (cm²)6,45166.4516 cm²
Hectare (ha)6,4516 x 10^-86.4516 x 10^-8 ha
Acre1,594 x 10^-71.594 x 10^-7 acres
Square yard (sq yd)7,000027 x 10^-47.000027 x 10^-4 sq yd
Square foot (sq ft)0,006944440.00694444 sq ft
Square mile (sq mi)2,490976 x 10^-102.490976 x 10^-10 sq mi

Please note that these values are based on the standard definitions and may vary slightly depending on the source

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