Ohm to Milliohm Converter
1 Ohm equals 1,000 Milliohms (mΩ). Electrical resistance is measured in ohms (Ω). Low-resistance values such as cable resistance, battery internal resistance, and PCB trace resistance are typically expressed in milliohms (mΩ), while pull-up resistors and sensor circuits use kiloohms (kΩ) or megaohms (MΩ). Use the converter below to change any ohms value into milliohms instantly.
Formula
Formula
Milliohm = Ohm × 1,000
Ohm to Milliohm table
| Ω | mΩ |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
Frequently asked questions
How many Milliohms are in a Ohm?
1 Ohm equals 1,000 Milliohms.
How do you convert Ohms to Milliohms?
Use the formula: Milliohm = Ohm × 1,000. For example, 10 Ohms equals 10,000 Milliohms.
What is 1 Ohm in Milliohms?
1 Ohm (Ω) is equal to 1,000 Milliohms (mΩ).
What is an ohm?
The ohm (Ω) is the SI unit of electrical resistance. One ohm is defined as the resistance between two points when a potential difference of one volt produces a current of one ampere (Ohm's Law: V = I × R). The unit is named after German physicist Georg Simon Ohm.
What are milliohms used for?
Milliohms (mΩ) are used to measure very low resistance values. Common examples include: copper wire resistance (a 1 m length of 1 mm² wire is about 17 mΩ), battery internal resistance (a healthy Li-ion cell is typically 10–100 mΩ), and PCB trace resistance. Measuring milliohms requires specialised four-wire (Kelvin) measurement techniques to eliminate lead resistance.
When would you use kiloohms or megaohms?
Kiloohms (kΩ) are common for resistors in audio circuits, pull-up and pull-down resistors in digital electronics, and voltage dividers. Megaohms (MΩ) appear in high-impedance circuits, insulation-resistance testing (a healthy cable insulation is typically > 1 MΩ), and electrostatic discharge (ESD) protection.