Units of measurement
From value
To value
Calculations
Square inch (in²)
Acre (ac)
0
0123456789
Information
Square inch (in²)
A square inch (in²) is a unit of area in the British and American measurement systems, equal to a square with a side of 1 inch (2.54 cm).
Acre (ac)
An acre (ac) is a traditional land measurement unit in the US and UK, equal to 4046.86 m² (approximately 0.4 ha).