Convert Microohms to Ohms
Convert Microohms (µΩ) to Ohms (Ω) instantly and accurately.
Conversion Formula
Ω = µΩ × 1.000000000e-6
About Microohms
The microohm (µΩ) equals 10⁻⁶ Ω, the practical scale for contact resistance testing, bus-bar joints, and circuit-breaker contacts. A well-made bolted bus-bar connection has contact resistance below 50 µΩ; a 25 mm² copper conductor has resistance of about 0.7 µΩ/mm; IEC 60947 specifies acceptance limits for switchgear contacts in microohms. 1 µΩ = 10⁻³ mΩ = 10³ nΩ.
About Ohms
The ohm (Ω) is the SI derived unit of electrical resistance, equal to 1 volt per ampere (1 V/A = 1 kg·m²·A⁻²·s⁻³), named after Georg Simon Ohm who published V = IR in 1827. Common benchmarks: a standard earphone is 32 Ω, a coaxial cable has 50 or 75 Ω characteristic impedance, and a typical carbon-film resistor spans 1 Ω to 10 MΩ. The ohm is realised internationally via the quantum Hall resistance standard Rₖ = h/e² ≈ 25 812.807 Ω.
Quick Reference Table
| Microohms (µΩ) | Ohms (Ω) |
|---|---|
| 1 µΩ | 1 × 10-6 Ω |
| 2 µΩ | 2 × 10-6 Ω |
| 5 µΩ | 5 × 10-6 Ω |
| 10 µΩ | 1 × 10-5 Ω |
| 25 µΩ | 2.5 × 10-5 Ω |
| 50 µΩ | 5 × 10-5 Ω |
| 100 µΩ | 1 × 10-4 Ω |