# Radians to Milliradians Conversion

Enter the angle in radians below to get the value converted to milliradians.

**Results in Milliradians:**

## How to Convert Radians to Milliradians

To convert a radian measurement to a milliradian measurement, multiply the angle by the conversion ratio. One radian is equal to 1,000 milliradians, so use this simple formula to convert:

The angle in milliradians is equal to the radians multiplied by 1,000.

**For example,**here's how to convert 5 radians to milliradians using the formula above.

Radians and milliradians are both units used to measure angle. Keep reading to learn more about each unit of measure.

## Radians

A radian is the measurement of angle equal to the start to the end of an arc divided by the radius of the circle or arc.^{[1]} 1 radian is equal to 180/π, or about 57.29578°. There are about 6.28318 radians in a circle.

The radian is the SI derived unit for angle in the metric system. Radians can be abbreviated as *rad*, and are also sometimes abbreviated as * ^{c}*,

*r*, or

*. For example, 1 radian can be written as 1 rad, 1*

^{R}^{c}, 1 r, or 1

^{R}.

Radians are often expressed using their definition. The formula to find radians is θ = s/r, where the angle in radians θ is equal to the arc length s divided by the radius r. Thus, radians may also be expressed as the formula of arc length over the radius.

## Milliradians

A milliradian is equal to 1/1,000 of a radian. One degree is equal to 0.0573 milliradians and there are 6,283 milliradians in a full revolution/circle. The milliradian is also a commonly used unit in mathematics.

The milliradian is a multiple of the radian, which is the SI derived unit for angle. In the metric system, "milli" is the prefix for 10^{-3}. A milliradian is sometimes also referred to as a mil. Milliradians can be abbreviated as *mrad*; for example, 1 milliradian can be written as 1 mrad.

## Radian to Milliradian Conversion Table

Radians | Milliradians |
---|---|

0.001 rad | 1 mrad |

0.002 rad | 2 mrad |

0.003 rad | 3 mrad |

0.004 rad | 4 mrad |

0.005 rad | 5 mrad |

0.006 rad | 6 mrad |

0.007 rad | 7 mrad |

0.008 rad | 8 mrad |

0.009 rad | 9 mrad |

0.01 rad | 10 mrad |

0.02 rad | 20 mrad |

0.03 rad | 30 mrad |

0.04 rad | 40 mrad |

0.05 rad | 50 mrad |

0.06 rad | 60 mrad |

0.07 rad | 70 mrad |

0.08 rad | 80 mrad |

0.09 rad | 90 mrad |

0.1 rad | 100 mrad |

0.2 rad | 200 mrad |

0.3 rad | 300 mrad |

0.4 rad | 400 mrad |

0.5 rad | 500 mrad |

0.6 rad | 600 mrad |

0.7 rad | 700 mrad |

0.8 rad | 800 mrad |

0.9 rad | 900 mrad |

1 rad | 1,000 mrad |

## 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