Convert Square Micrometers to Square Thou
Convert Square Micrometers (μm²) to Square Thou (thou²) instantly and accurately.
Conversion Formula
thou² = μm² × 0.0015500031
About Square Micrometers
A square micrometer (μm²), also called a square micron, equals one trillionth of a square meter - the area of a square with sides one millionth of a meter (10⁻¹² m²). This is the natural scale of biological cells: a human red blood cell has a surface area of about 135 μm², and a typical bacterium might occupy 2-10 μm². Square micrometers are the standard unit in cell biology, histology, microscopy, and semiconductor characterisation where individual features on wafers are measured.
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 Micrometers (μm²) | Square Thou (thou²) |
|---|---|
| 1 μm² | 0.00155 thou² |
| 2 μm² | 0.00310001 thou² |
| 5 μm² | 0.00775002 thou² |
| 10 μm² | 0.0155 thou² |
| 25 μm² | 0.0387501 thou² |
| 50 μm² | 0.0775002 thou² |
| 100 μm² | 0.155 thou² |