# Watt-seconds to Megawatt-hours Conversion

Enter the energy in watt-seconds below to get the value converted to megawatt-hours.

**Results in Megawatt-hours:**

## How to Convert Watt-seconds to Megawatt-hours

To convert a watt-second measurement to a megawatt-hour measurement, divide the energy by the conversion ratio. One megawatt-hour is equal to 3,600,000,000 watt-seconds, so use this simple formula to convert:

The energy in megawatt-hours is equal to the watt-seconds divided by 3,600,000,000.

**For example,**here's how to convert 5,000,000,000 watt-seconds to megawatt-hours using the formula above.

Watt-seconds and megawatt-hours are both units used to measure energy. Keep reading to learn more about each unit of measure.

## Watt-seconds

The watt-second is a measure of electrical energy equal to one watt of power over a one second period. One watt-second is equal to 1/3,600 of a watt-hour or one joule.

Watt-seconds are usually abbreviated as *Ws*, although the formally adopted expression is *W·s*. The abbreviation *W s* is also sometimes used. For example, 1 watt-second can be written as 1 Ws, 1 W·s, or 1 W s.

In formal expressions, the centered dot (·) or space is used to separate units used to indicate multiplication in an expression and to avoid conflicting prefixes being misinterpreted as a unit symbol.^{[1]}

## Megawatt-hours

A megawatt-hour is a measure of electrical energy equal to one megawatt, or 1,000,000 watts, of power over a one hour period. Megawatt-hours are a measure of electrical work performed over a period of time, and are often used as a way of measuring energy usage by electric companies.

Megawatt-hours are usually abbreviated as *MWh*, although the formally adopted expression is *MW·h*. The abbreviation *MW h* is also sometimes used. For example, 1 megawatt-hour can be written as 1 MWh, 1 MW·h, or 1 MW h.

## Watt-second to Megawatt-hour Conversion Table

Watt-seconds | Megawatt-hours |
---|---|

1 Ws | 0.00000000027778 MWh |

2 Ws | 0.00000000055556 MWh |

3 Ws | 0.00000000083333 MWh |

4 Ws | 0.0000000011111 MWh |

5 Ws | 0.0000000013889 MWh |

6 Ws | 0.0000000016667 MWh |

7 Ws | 0.0000000019444 MWh |

8 Ws | 0.0000000022222 MWh |

9 Ws | 0.0000000025 MWh |

10 Ws | 0.0000000027778 MWh |

100 Ws | 0.000000027778 MWh |

1,000 Ws | 0.00000027778 MWh |

10,000 Ws | 0.0000027778 MWh |

100,000 Ws | 0.000027778 MWh |

1,000,000 Ws | 0.000278 MWh |

10,000,000 Ws | 0.002778 MWh |

100,000,000 Ws | 0.027778 MWh |

1,000,000,000 Ws | 0.277778 MWh |

10,000,000,000 Ws | 2.7778 MWh |

## References

- Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019, https://www.bipm.org/utils/common/pdf/si-brochure/SI-Brochure-9-EN.pdf