Convert Ohms to Microohms
Convert Ohms (Ω) to Microohms (µΩ) instantly and accurately.
Conversion Formula
µΩ = Ω × 1000000
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.
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.
Quick Reference Table
| Ohms (Ω) | Microohms (µΩ) |
|---|---|
| 1 Ω | 1000000 µΩ |
| 2 Ω | 2000000 µΩ |
| 5 Ω | 5000000 µΩ |
| 10 Ω | 10000000 µΩ |
| 25 Ω | 25000000 µΩ |
| 50 Ω | 50000000 µΩ |
| 100 Ω | 100000000 µΩ |