# Convert Watts to Milliwatts

Enter the power in watts below to get the value converted to milliwatts.

**Results in Milliwatts:**

## How to Convert Watts to Milliwatts

To convert a watt measurement to a milliwatt measurement, multiply the power by the conversion ratio. One watt is equal to 1,000 milliwatts, so use this simple formula to convert:

The power in milliwatts is equal to the watts multiplied by 1,000.

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

Watts and milliwatts are both units used to measure power. Keep reading to learn more about each unit of measure.

## Watts

One watt is the power equal to the rate of energy of one joule per second in an electrical circuit. One watt is also equal to the power produced in a circuit with a voltage potential of one volt with a current of one amp.

The watt is the SI derived unit for power in the metric system. Watts can be abbreviated as *W*, for example 1 watt can be written as 1 W.

Watt's Law states the relationship between power, current, and voltage. Using Watt's Law, it's possible to express the power in watts as an expression using current and voltage.

P_{W} = I_{A} × V_{V}

The power in watts is equal to the current in amperes times the potential difference in volts.

Combining this with Ohm's Law, it's also possible to express the power in watts using resistance in addition to volts and amps.

## Milliwatts

One milliwatt is the power equal to 1/1,000 of a watt, or the energy consumption at a rate of 1/1,000 of a joule per second.

The milliwatt is a multiple of the watt, which is the SI derived unit for power. In the metric system, "milli" is the prefix for 10^{-3}. Milliwatts can be abbreviated as *mW*, for example 1 milliwatt can be written as 1 mW.

## Watt Measurements and Equivalent Milliwatt Conversions

Watts | Milliwatts |
---|---|

1 W | 1,000 mW |

2 W | 2,000 mW |

3 W | 3,000 mW |

4 W | 4,000 mW |

5 W | 5,000 mW |

6 W | 6,000 mW |

7 W | 7,000 mW |

8 W | 8,000 mW |

9 W | 9,000 mW |

10 W | 10,000 mW |

11 W | 11,000 mW |

12 W | 12,000 mW |

13 W | 13,000 mW |

14 W | 14,000 mW |

15 W | 15,000 mW |

16 W | 16,000 mW |

17 W | 17,000 mW |

18 W | 18,000 mW |

19 W | 19,000 mW |

20 W | 20,000 mW |

21 W | 21,000 mW |

22 W | 22,000 mW |

23 W | 23,000 mW |

24 W | 24,000 mW |

25 W | 25,000 mW |

26 W | 26,000 mW |

27 W | 27,000 mW |

28 W | 28,000 mW |

29 W | 29,000 mW |

30 W | 30,000 mW |

31 W | 31,000 mW |

32 W | 32,000 mW |

33 W | 33,000 mW |

34 W | 34,000 mW |

35 W | 35,000 mW |

36 W | 36,000 mW |

37 W | 37,000 mW |

38 W | 38,000 mW |

39 W | 39,000 mW |

40 W | 40,000 mW |

## More Watt Power Conversions

**SI Units**

- Convert to Microwatts
- 1 W is equal to 1,000,000 microwatts
- Convert to Kilowatts
- 1 W is equal to 0.001 kilowatts
- Convert to Megawatts
- 1 W is equal to 1.0E-6 megawatts

**US Customary & Imperial Units**

- Convert to Mechanical Horsepower
- 1 W is equal to 0.001341 mechanical horsepower
- Convert to Electric Horsepower
- 1 W is equal to 0.00134 electric horsepower
- Convert to Btu Per Hour
- 1 W is equal to 3.412142 btu per hour

**Other Units**

- Convert to Kilocalories Per Hour
- 1 W is equal to 0.860421 kilocalories per hour