Megohms to Milliohms Converter
Enter the electrical resistance in megohms below to convert it to milliohms.
Convert Megohms to Milliohms
Enter a value in megohms (MΩ) to convert to milliohms (mΩ).
Megohm to Milliohm Conversion Table
Table showing various megohm measurements converted to milliohms. Click any preset value or arrow to load it into the converter.
How to Convert Megohms to Milliohms
To convert megohms to milliohms, multiply the electrical resistance by the following conversion ratio: 1,000,000,000 milliohms/megohm.
Since one megohm is equal to 1,000,000,000 milliohms, you can use this simple formula to convert:
The electrical resistance in milliohms is equal to the electrical resistance in megohms multiplied by 1,000,000,000.
For example, here's how to convert 5 megohms to milliohms using the formula above.
How Many Milliohms Are in a Megohm?
There are 1,000,000,000 milliohms in a megohm, which is why we use this value in the formula above.
Our megohm to milliohm calculator automatically converts your electrical resistance measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Megohms and milliohms are both units used to measure electrical resistance. Keep reading to learn more about each unit.
What Is a Megohm?
A megohm is a unit of electrical resistance equal to 1,000,000 ohms (Ω), the base unit for electrical resistance. Equal to 1,000,000 Ohms (1,000 kΩ). [1]
The megohm is classified as an International System of Units (SI) unit of electrical resistance. Megohms can be abbreviated as MΩ; for example, 1 megohm can be written as 1 MΩ.
When working with megohms (MΩ) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, megohms (MΩ) are widely used across large-scale industrial, bulk, and macro-level electrical resistance specifications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
What Is a Milliohm?
A milliohm is a unit of electrical resistance equal to 1/1,000 of an ohm (0.001 Ω). One-thousandth of an Ohm. [2]
The milliohm is classified as a metric and SI-compatible unit of electrical resistance. Milliohms can be abbreviated as mΩ; for example, 1 milliohm can be written as 1 mΩ.
In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the milliohm (mΩ) a convenient decimal multiple of the ohm (Ω).
In practice, milliohms (mΩ) are widely used across fine-tolerance laboratory, analytical, and micro-scale electrical resistance measurements within SI metric workflows, engineering documentation, and technical data sheets.
When converting electrical resistance between megohms (MΩ) and milliohms (mΩ), keep full floating-point precision (1 MΩ = 1,000,000,000 mΩ; 1 mΩ = 1e-9 MΩ) during intermediate calculations and round only the final milliohm figure to match your instrument tolerance.
More Megohm & Milliohm Conversions
Need to calculate in the opposite direction? Use our milliohms to megohms calculator to switch your starting unit immediately. You can also explore related tools such as converting milliohms to megohms, converting megohms to ohms, or converting ohms to megohms.
Convert from Megohms
Convert to Milliohms
Frequently Asked Questions
References
- [1]NIST CUU StandardNIST CUU (Derived SI Unit: Ohm (Ω))·Electrical Resistance Metrology Standard — Megohms (MΩ) to Milliohms (mΩ)
- [2]NIST OWM SpecificationNIST OWM (SI Units — Electric Current)·Unit Specifications: Megohm (MΩ) & Milliohm (mΩ)
- [3]BIPM ReferenceBIPM (SI Prefixes (mΩ, kΩ, MΩ, GΩ))·Conversion Factors & Mathematical Basis (MΩ to mΩ)