Convert Square Miles to Square Thou
Convert Square Miles (mi²) to Square Thou (thou²) instantly and accurately.
Conversion Formula
thou² = mi² × 4.014489600e+15
About Square Miles
A square mile (mi²) is an imperial unit of area equal to a square with sides of one mile (5,280 ft × 5,280 ft). It is used for measuring large land areas like counties, states, and countries in the United States. Los Angeles covers about 503 mi², Rhode Island (smallest US state) is roughly 1,214 mi², and Alaska is about 665,384 mi². This unit is standard in American geography, land surveying, and regional planning.
About Square Thou
A square thou (thou²), sometimes called a square mil, is the area of a square with sides of one thousandth of an inch (0.0254 mm), equal to approximately 6.452 × 10⁻¹⁰ m². This tiny imperial unit is indispensable in precision engineering, PCB (printed circuit board) design, and manufacturing, where conductor widths, dielectric coating thicknesses, and tight machining tolerances are specified in thou. Wire insulation, thin films, and precision-stamped metal components are commonly described using this unit.
Quick Reference Table
| Square Miles (mi²) | Square Thou (thou²) |
|---|---|
| 1 mi² | 4.014 × 1015 thou² |
| 2 mi² | 8.029 × 1015 thou² |
| 5 mi² | 2.007 × 1016 thou² |
| 10 mi² | 4.014 × 1016 thou² |
| 25 mi² | 1.004 × 1017 thou² |
| 50 mi² | 2.007 × 1017 thou² |
| 100 mi² | 4.014 × 1017 thou² |