Ohm Conversion Calculator

Enter a value in ohms below to convert to another unit of electrical resistance.

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What Is an Ohm?

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An ohm is a unit used to measure electrical resistance.

The ohm is the SI derived unit for electrical resistance in the metric system. Ohms can be abbreviated as Ω; for example, 1 ohm can be written as 1 Ω.

Ohm's Law

Ohm's Law states the current flowing between two points on a conductor is proportional to the voltage and inversely proportional to the resistance. More specifically, the current is equal to the voltage divided by the resistance.

Using Ohm's Law, it's possible to express the resistance in ohms as an expression using current and voltage.

RΩ = VVIA

Here, the resistance R in ohms is equal to the potential difference V in volts divided by the current I in amperes.

Background and Origin

The ohm is named for the German physicist Georg Simon Ohm, who discovered Ohm’s Law. The ohm has been in use since the late 1800’s, although it’s been redefined several times.

How Much Is an Ohm?

An ohm is the resistance between two points of an electrical conductor transmitting a current of one ampere when the electrical potential difference is one volt between the points.[1]

How to Convert Ohms

To convert ohms to another unit of electrical resistance, you need to multiply the value by a conversion factor. A conversion factor is a numerical value used to change the units of a measurement without changing the value.[2]

You can find the conversion factors for ohms in the conversion table below.

Then, multiply the electrical resistance measurement by the conversion factor to find the equivalent value in the desired unit of measurement.

ohms × conversion factor = result

You can also use a calculator, such as one of the converters below, for the conversion.

Ohm Conversion Table

Common ohm values and equivalent imperial and metric electrical resistance measurements
ohms nanoohms microohms milliohms kiloohms megaohms gigaohms statohms abohms
1 Ω 1,000,000,000 nΩ 1,000,000 µΩ 1,000 mΩ 0.001 kΩ 0.000001 MΩ 0.000000001 GΩ 0.0000000000011127 statΩ 1,000,000,000 abΩ
2 Ω 2,000,000,000 nΩ 2,000,000 µΩ 2,000 mΩ 0.002 kΩ 0.000002 MΩ 0.000000002 GΩ 0.0000000000022253 statΩ 2,000,000,000 abΩ
3 Ω 3,000,000,000 nΩ 3,000,000 µΩ 3,000 mΩ 0.003 kΩ 0.000003 MΩ 0.000000003 GΩ 0.000000000003338 statΩ 3,000,000,000 abΩ
4 Ω 4,000,000,000 nΩ 4,000,000 µΩ 4,000 mΩ 0.004 kΩ 0.000004 MΩ 0.000000004 GΩ 0.0000000000044506 statΩ 4,000,000,000 abΩ
5 Ω 5,000,000,000 nΩ 5,000,000 µΩ 5,000 mΩ 0.005 kΩ 0.000005 MΩ 0.000000005 GΩ 0.0000000000055633 statΩ 5,000,000,000 abΩ
6 Ω 6,000,000,000 nΩ 6,000,000 µΩ 6,000 mΩ 0.006 kΩ 0.000006 MΩ 0.000000006 GΩ 0.0000000000066759 statΩ 6,000,000,000 abΩ
7 Ω 7,000,000,000 nΩ 7,000,000 µΩ 7,000 mΩ 0.007 kΩ 0.000007 MΩ 0.000000007 GΩ 0.0000000000077886 statΩ 7,000,000,000 abΩ
8 Ω 8,000,000,000 nΩ 8,000,000 µΩ 8,000 mΩ 0.008 kΩ 0.000008 MΩ 0.000000008 GΩ 0.0000000000089012 statΩ 8,000,000,000 abΩ
9 Ω 9,000,000,000 nΩ 9,000,000 µΩ 9,000 mΩ 0.009 kΩ 0.000009 MΩ 0.000000009 GΩ 0.000000000010014 statΩ 9,000,000,000 abΩ
10 Ω 10,000,000,000 nΩ 10,000,000 µΩ 10,000 mΩ 0.01 kΩ 0.00001 MΩ 0.00000001 GΩ 0.000000000011127 statΩ 10,000,000,000 abΩ
11 Ω 11,000,000,000 nΩ 11,000,000 µΩ 11,000 mΩ 0.011 kΩ 0.000011 MΩ 0.000000011 GΩ 0.000000000012239 statΩ 11,000,000,000 abΩ
12 Ω 12,000,000,000 nΩ 12,000,000 µΩ 12,000 mΩ 0.012 kΩ 0.000012 MΩ 0.000000012 GΩ 0.000000000013352 statΩ 12,000,000,000 abΩ
13 Ω 13,000,000,000 nΩ 13,000,000 µΩ 13,000 mΩ 0.013 kΩ 0.000013 MΩ 0.000000013 GΩ 0.000000000014464 statΩ 13,000,000,000 abΩ
14 Ω 14,000,000,000 nΩ 14,000,000 µΩ 14,000 mΩ 0.014 kΩ 0.000014 MΩ 0.000000014 GΩ 0.000000000015577 statΩ 14,000,000,000 abΩ
15 Ω 15,000,000,000 nΩ 15,000,000 µΩ 15,000 mΩ 0.015 kΩ 0.000015 MΩ 0.000000015 GΩ 0.00000000001669 statΩ 15,000,000,000 abΩ
16 Ω 16,000,000,000 nΩ 16,000,000 µΩ 16,000 mΩ 0.016 kΩ 0.000016 MΩ 0.000000016 GΩ 0.000000000017802 statΩ 16,000,000,000 abΩ
17 Ω 17,000,000,000 nΩ 17,000,000 µΩ 17,000 mΩ 0.017 kΩ 0.000017 MΩ 0.000000017 GΩ 0.000000000018915 statΩ 17,000,000,000 abΩ
18 Ω 18,000,000,000 nΩ 18,000,000 µΩ 18,000 mΩ 0.018 kΩ 0.000018 MΩ 0.000000018 GΩ 0.000000000020028 statΩ 18,000,000,000 abΩ
19 Ω 19,000,000,000 nΩ 19,000,000 µΩ 19,000 mΩ 0.019 kΩ 0.000019 MΩ 0.000000019 GΩ 0.00000000002114 statΩ 19,000,000,000 abΩ
20 Ω 20,000,000,000 nΩ 20,000,000 µΩ 20,000 mΩ 0.02 kΩ 0.00002 MΩ 0.00000002 GΩ 0.000000000022253 statΩ 20,000,000,000 abΩ

Ohm Conversion Calculators

You can also convert electrical resistance using one of our ohm converters below.

SI Units
Centimetre–Gram–Second Units

You might also find our other electrical calculators useful.

References

  1. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf
  2. National Institute of Standards & Technology, Unit Conversion, https://www.nist.gov/pml/owm/metric-si/unit-conversion

Other Electrical Resistance Units

SI Units
Centimetre–Gram–Second Units