Resistance converter
Convert mΩ to µΩ — milliohm to microohm
Convert milliohms (mΩ) to microohms (µΩ) instantly. 1 mΩ = 1,000 µΩ. Free calculator with formula, conversion table, and Ω base-unit equivalent.
Also searched as: mOhm to uOhm, milli ohm to micro ohm, milli to micro ohm, milli ohms to micro ohms.
- Scientific Notation
- 5 × 10³ µΩ
- Real-World Context
- 1 mΩ is roughly the PCB trace resistance
- Step-by-Step
- 1. Start with 5 mΩ. 2. Since 1 milli-unit = 1,000 micro-units, multiply by 1,000. 3. 5 × 1,000 = 5,000 µΩ.
- Formula Used
- × 1,000 (milli = 10⁻³, micro = 10⁻⁶)
Quick Conversions
| Mega | 5 × 10⁻⁹ MΩ |
|---|---|
| Kilo | 0.000005 kΩ |
| Base Unit (ohms) | 0.005 ohms |
| Nano | 5,000,000 nΩ |
| Pico | 5 × 10⁹ pΩ |
Quick mΩ to µΩ answer
1 mΩ = 1,000 µΩ
multiply by 1,000
5 mΩ = 5,000 µΩ
milliohm to microohm formula
Milli is 10^-3 and micro is 10^-6. They are three powers of ten apart, so every mΩ to µΩ conversion uses the exact factor 1,000.
µΩ = mΩ × 1,000
5 mΩ × 1,000 = 5,000 µΩmΩ to µΩ table
Common values for milliohms converted to microohmsand the base unit (Ω).
| milliohms | microohms | ohms |
|---|---|---|
| 0.001 mΩ | 1 µΩ | 0.000001 Ω |
| 0.01 mΩ | 10 µΩ | 0.00001 Ω |
| 0.1 mΩ | 100 µΩ | 0.0001 Ω |
| 1 mΩ | 1,000 µΩ | 0.001 Ω |
| 2 mΩ | 2,000 µΩ | 0.002 Ω |
| 5 mΩ | 5,000 µΩ | 0.005 Ω |
| 10 mΩ | 10,000 µΩ | 0.01 Ω |
| 20 mΩ | 20,000 µΩ | 0.02 Ω |
| 50 mΩ | 50,000 µΩ | 0.05 Ω |
| 100 mΩ | 100,000 µΩ | 0.1 Ω |
| 1,000 mΩ | 1,000,000 µΩ | 1 Ω |
Understanding milliohms and microohms
A milliohm (mΩ) is 10⁻³ of the base unit (ohm) and a microohm (µΩ) is 10⁻⁶. They sit three powers of ten apart, so going from mΩ to µΩ means multiplying by exactly 1,000 — move the decimal point three places to the right.
Milliohms are the unit of shunts, contact resistance, busbars and battery internal resistance. A 5 mΩ shunt carrying 20 A drops 100 mV and dissipates 2 W, so the resistance value and the thermal design are chosen together.
This calculator shifts the decimal exponent rather than multiplying in binary floating point, so 5 mΩ returns exactly 5,000 µΩ — not a value with a trailing rounding error.
Common mΩ to µΩ mistake
Two-wire measurement is the failure mode here. Typical lead and contact resistance of 10–100 mΩ swamps any mΩ or µΩ reading, so a two-wire meter reports its own leads no matter how carefully the units convert.
When to use mΩ vs µΩ
milliohms and microohms are used for PCB trace resistance, shunt resistors, contact resistance, cable resistance, and four-wire Kelvin measurement. Use the larger milli unit when the number becomes easier to scan, and the smaller micro unit when you need finer detail.