Electric Resistance Converter

Convert between electrical resistance units including ohms, milliohms, microohms, kilohms, megaohms, gigaohms, and abohms.

Electric Resistance Converter 7 units

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Common Electric Resistance Conversions

All Electric Resistance Conversions

Browse all unit combinations — each page has a dedicated converter and conversion table.

Abohms → Microohms Abohms → Milliohms Abohms → Ohms Abohms → Kilohms Abohms → Megaohms Abohms → Gigaohms Microohms → Abohms Microohms → Milliohms Microohms → Ohms Microohms → Kilohms Microohms → Megaohms Microohms → Gigaohms Milliohms → Abohms Milliohms → Microohms Milliohms → Ohms Milliohms → Kilohms Milliohms → Megaohms Milliohms → Gigaohms Ohms → Abohms Ohms → Microohms Ohms → Milliohms Ohms → Kilohms Ohms → Megaohms Ohms → Gigaohms Kilohms → Abohms Kilohms → Microohms Kilohms → Milliohms Kilohms → Ohms Kilohms → Megaohms Kilohms → Gigaohms Megaohms → Abohms Megaohms → Microohms Megaohms → Milliohms Megaohms → Ohms Megaohms → Kilohms Megaohms → Gigaohms Gigaohms → Abohms Gigaohms → Microohms Gigaohms → Milliohms Gigaohms → Ohms Gigaohms → Kilohms Gigaohms → Megaohms

📐 How to Use

Choose the resistance unit you are starting from in the From dropdown and the unit you want in the To dropdown.
Type the resistance into the value box; the result area shows the converted figure and restates the whole conversion in words.
Click the swap arrows to exchange the two units, then use Copy to carry the result into a bill of materials or test log.
Use the Common Electric Resistance Conversions grid to load a frequent pair in one click, or follow an All Electric Resistance Conversions link to a page with a full table.

❓ Frequently Asked Questions

QHow many ohms are in 1 kilohm?

1 kΩ is 1000 Ω. Going one prefix higher, 1 MΩ is 1,000,000 Ω or 1000 kΩ, and 1 GΩ is 1000 MΩ. Resistor markings rely on this chain, so 47 kΩ is 47,000 Ω.

QWhat is 1 ohm in milliohms?

1 Ω equals 1000 mΩ, and the same value is 1,000,000 µΩ. These small units matter for shunts, cable runs and contact resistance, where a reading of 0.005 Ω is more readable written as 5 mΩ.

QIs mΩ the same as MΩ?

No, and the difference is a factor of a billion. The lowercase m is milli, a thousandth of an ohm, while the capital M is mega, a million ohms. Insulation specs in MΩ and contact specs in mΩ are often misread for each other.

QWhat does a resistor marked 4k7 mean?

4k7 is 4.7 kilohms, written with the prefix standing in for the decimal point so a faded dot cannot be misread. Enter 4.7 with kilohm selected and the converter returns 4700 ohms.

ℹ️ About Electric Resistance Conversion

Resistance describes how strongly a component opposes current, one ohm being one volt per ampere. What makes the unit awkward in practice is range: a current shunt or a solder joint sits in milliohms, a divider in kilohms, and insulation testing in gigohms, so prefixes do most of the work. The naming adds its own confusion, since megaohm, megohm and MΩ all mean the same unit, while mΩ with a lowercase m is the milliohm, a billion times smaller. The abohm survives from the CGS electromagnetic system at a thousand-millionth of an ohm.

The list holds seven units and the ohm is the value each is stored against. A result of ten or more keeps four decimal places, below one it keeps up to eight, and trailing zeros are dropped. The converter needs no network access after the page has loaded.

📏 7 Supported Units

Abohm (abΩ), Microohm (µΩ), Milliohm (mΩ), Ohm (Ω), Kilohm (kΩ), Megaohm (MΩ), Gigaohm (GΩ).