# Ohms Conversion

The ohm is a unit used to measure electrical resistance. Use one of the conversion calculators below to convert to another unit of measure, or read on to learn more about ohms.

## Ohm Conversion Calculators

Choose a unit of electrical resistance to convert to.

**SI Units**

**Centimetre–Gram–Second Units**

## Ohm Definition and Usage

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

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 states the current between two points on a conductor is proportional to the voltage and inversely proportional to the resistance. Using Ohm's Law, it's possible to express the resistance in ohms as an expression using current and voltage.

R_{Ω} = V_{V}I_{A}

The resistance in ohms is equal to the potential difference in volts divided by the current 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.

## Ohms Measurement Conversion Table

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 |

You might also find our other electrical calculators useful.

## References

- International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/utils/common/pdf/si-brochure/SI-Brochure-9.pdf