# Amp-Hours (Ah) to Watt-Hours (Wh) Conversion Calculator

Convert amp-hours to watt-hours by entering the amount of charge in Ah and the battery terminal voltage below.

## Watt-Hours Results:

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## How to Convert Amp-Hours to Watt-Hours

Amp-hours (Ah) and watt-hours (Wh) are units that are often used to measure battery capacity.

The ampere-hour capacity of a battery, expressed as Ah or A·h, describes the duration for which a battery can supply one ampere of current and the maximum amount of current it can supply for one hour.

The watt-hour capacity of a battery, expressed as Wh or W·h, is a measure of the amount of energy being supplied to the load.

To convert amp-hours to watt-hours, you can use the Ohm’s Law formula.

### Ah to Wh Conversion Formula

To convert from electric charge to energy using Ohm’s Law, use the following formula:

E_{(Wh)} = Q_{(Ah)} × V_{(V)}

Thus, the energy *E* in watt-hours is equal to the charge *Q* in amp-hours times the voltage *V*. This is essentially the same formula used to convert amps to watts.

By reversing this formula, you can also convert Wh to Ah.

**For example,** let’s convert 300 Ah charge at 12 V to Wh.

E_{(Wh)} = 300 Ah × 12 V

E_{(Wh)} = 3,600 Wh

So, a 300 amp-hour charge at 12 volts is equal to 3,600 watt-hours (3.6 kWh) of energy.

## Amp-Hours to Watt-Hours Conversion Chart

Amp-Hours | Watt-Hours at 12V | Watt-Hours at 24V |
---|---|---|

50 Ah | 600 Wh | 1,200 Wh |

100 Ah | 1,200 Wh | 2,400 Wh |

150 Ah | 1,800 Wh | 3,600 Wh |

200 Ah | 2,400 Wh | 4,800 Wh |

250 Ah | 3,000 Wh | 6,000 Wh |

300 Ah | 3,600 Wh | 7,200 Wh |

350 Ah | 4,200 Wh | 8,400 Wh |

400 Ah | 4,800 Wh | 9,600 Wh |

450 Ah | 5,400 Wh | 10,800 Wh |

500 Ah | 6,000 Wh | 12,000 Wh |

550 Ah | 6,600 Wh | 13,200 Wh |

600 Ah | 7,200 Wh | 14,400 Wh |

650 Ah | 7,800 Wh | 15,600 Wh |

700 Ah | 8,400 Wh | 16,800 Wh |

750 Ah | 9,000 Wh | 18,000 Wh |

800 Ah | 9,600 Wh | 19,200 Wh |

850 Ah | 10,200 Wh | 20,400 Wh |

900 Ah | 10,800 Wh | 21,600 Wh |

950 Ah | 11,400 Wh | 22,800 Wh |

1000 Ah | 12,000 Wh | 24,000 Wh |

You might also be interested in converting amp-hours to kilowatt-hours.