Circular Mil Ohm/Foot to Ohm Meter Conversion
Convert between Circular Mil Ohm/Foot and Ohm Meter quickly and accurately.
How to Convert Circular Mil Ohm/Foot to Ohm Meter
Conversion Formula
Example
Convert 15 CM·Ω/ft to Ω·m:
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
Ohm Meter
Ω·m
Definition
The SI base unit of electric resistivity, representing the resistance of a material per unit length when a current flows through it. One ohm meter is the resistivity of a material that has a resistance of one ohm when the current flows through a cube of the material with sides of one meter.
History/Origin
Named after Georg Simon Ohm, the German physicist who formulated Ohm's law in 1827. The ohm meter unit was established as part of the International System of Units (SI) to provide a standardized measure of electrical resistivity.
Current Use
Widely used in electrical engineering, materials science, and physics for measuring the electrical resistance properties of conductors, semiconductors, and insulators. Essential for designing electrical circuits, cables, and electronic components.
Multiplier
1
Offset
0
Circular Mil Ohm/Foot to Ohm Meter Conversion Table
| Circular Mil Ohm/Foot [CM·Ω/ft] | Ohm Meter [Ω·m] |
|---|---|
| 1 CM·Ω/ft | 2E-9 Ω·m |
| 10 CM·Ω/ft | 2E-8 Ω·m |
| 25 CM·Ω/ft | 4E-8 Ω·m |
| 50 CM·Ω/ft | 8E-8 Ω·m |
| 100 CM·Ω/ft | 2E-7 Ω·m |
| 0 CM·Ω/ft | 0E+0 Ω·m |
| -10 CM·Ω/ft | -2E-8 Ω·m |
| -40 CM·Ω/ft | -7E-8 Ω·m |
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