Circular Mil Ohm/Foot to Microhm Inch Conversion
Convert between Circular Mil Ohm/Foot and Microhm Inch quickly and accurately.
How to Convert Circular Mil Ohm/Foot to Microhm Inch
Conversion Formula
Example
Convert 15 CM·Ω/ft to μΩ·in:
Unit Information
Learn about the electric resistivity units you're converting between
Circular Mil Ohm/Foot
CM·Ω/ft
Definition
A specialized unit of electric resistivity used in electrical engineering for wire and cable specifications. Combines the circular mil (area unit) with ohm per foot to express resistivity in terms of wire gauge and length.
History/Origin
Developed specifically for electrical wire and cable manufacturing in North America. The circular mil unit represents the cross-sectional area of a wire, making this unit practical for specifying wire resistivity in electrical applications.
Current Use
Extensively used in electrical wire and cable manufacturing, electrical engineering, and power distribution systems. Essential for calculating voltage drop, power loss, and conductor sizing in electrical installations.
Multiplier
2E-9
Offset
0
Microhm Inch
μΩ·in
Definition
An imperial unit for very low electric resistivity equal to 2.5400000000102E-8 ohm meters. Used for precision measurements of highly conductive materials in imperial measurement systems.
History/Origin
Developed as an imperial equivalent to microhm centimeter for precision resistivity measurements. Used in North American industries where imperial units are preferred for high-precision electrical measurements.
Current Use
Used in North American precision electrical engineering and manufacturing for measuring highly conductive materials. Common in aerospace, automotive, and electronics industries that require imperial unit precision.
Multiplier
3E-8
Offset
0
Circular Mil Ohm/Foot to Microhm Inch Conversion Table
| Circular Mil Ohm/Foot [CM·Ω/ft] | Microhm Inch [μΩ·in] |
|---|---|
| 1 CM·Ω/ft | 0.06545 μΩ·in |
| 10 CM·Ω/ft | 0.654498 μΩ·in |
| 25 CM·Ω/ft | 1.636246 μΩ·in |
| 50 CM·Ω/ft | 3.272492 μΩ·in |
| 100 CM·Ω/ft | 6.544985 μΩ·in |
| 0 CM·Ω/ft | 0E+0 μΩ·in |
| -10 CM·Ω/ft | -0.654498 μΩ·in |
| -40 CM·Ω/ft | -2.617994 μΩ·in |
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