Calculating kWh from amps is quite a challenge. First, we need to convert amps to watts (using voltage), and then we can convert watts to kWh. To make this process easier, we have developed the **Amps To kWh Calculator** that does all of this automatically.

On top of that, we have also checked how many kWh do different devices (from 1 amp to 1000 amps) use at 12V, 24V, 120V, and 120V voltages if we run them for 1 hour. All the calculations are summarized in the *chart* below.

First of all, let’s look at what amps and kilowatt-hours (kWh) actually are:

**Amps**or amperes are units of. If we multiply amps by voltage, we get watts (units of electric power).*electric current***Kilowatt-hours***(kWh)*are units of. If we multiply watts by hours of use, we get watt-hours (Wh). To further convert Wh to kWh, we have to divide Wh by a factor of 1000.*electric energy*

The whole amps to kWh conversion can be written in this formula:

**kWh = Amps Ã— Volts Ã— Hours Of Use / 1000**

Here is a quick example: Let’s say that we have a 10 amp electric device running on a standard 120V circuit for 5 hours. How to calculate kWh from amps? We use the formula above like this:

**kWh Used = 10 Amps** Ã— 120 Volts Ã— 5 Hours / 1000

**= 6 kWh**

This 10 amp electric device will use 6 kWh of electricity.

As we can see, the amps to kilowatt-hour conversion depend on only 3 factors (we will use these 3 factors in the Amp To kWh Calculator further on):

**How many amps we are using***(1st slider in the calculator)*.**What kind of voltage we are using***(2nd slider in the calculator)*.**For how long we run the electric device***(3rd slider in the calculator)*.

If we know all these 3 factors, we can easily use this calculator to convert amps to kWh:

## Amps To kWh Calculator

To illustrate how this calculator works, you can use the example from above: 10 amp device running on 120V for 5 hours. Just slide the 1st slider to ’10’, 2nd slider to ‘120’, and the 3rd slider to ‘5’. You get the result: Running a 10 amp 120V device for 5 hours consumes 6 kWh of electricity.

This is just one example. Let’s see how many kWh do different amp devices (from 1 amp to 1000 amps) running at 12V, 24V, 120V, and 220V voltages for 1 hour use:

### Amps To kWh Chart For 1 Hour Of Use

Current (Amps): |
12V Voltage: |
24V Voltage: |
120V Voltage: |
220V Voltage: |

1 Amp | 0.012 kWh | 0.024 kWh | 0.12 kWh | 0.22 kWh |

2 Amps | 0.024 kWh | 0.048 kWh | 0.24 kWh | 0.44 kWh |

3 Amps | 0.036 kWh | 0.072 kWh | 0.36 kWh | 0.66 kWh |

4 Amps | 0.048 kWh | 0.096 kWh | 0.48 kWh | 0.88 kWh |

5 Amps | 0.060 kWh | 0.120 kWh | 0.60 kWh | 1.10 kWh |

6 Amps | 0.072 kWh | 0.144 kWh | 0.72 kWh | 1.32 kWh |

7 Amps | 0.084 kWh | 0.168 kWh | 0.84 kWh | 1.54 kWh |

8 Amps | 0.096 kWh | 0.192 kWh | 0.96 kWh | 1.76 kWh |

9 Amps | 0.108 kWh | 0.216 kWh | 1.08 kWh | 1.98 kWh |

10 Amps | 0.12 kWh | 0.24 kWh | 1.20 kWh | 2.20 kWh |

15 Amps | 0.18 kWh | 0.36 kWh | 1.80 kWh | 3.30 kWh |

20 Amps | 0.24 kWh | 0.48 kWh | 2.40 kWh | 4.40 kWh |

30 Amps | 0.36 kWh | 0.72 kWh | 3.60 kWh | 6.60 kWh |

40 Amps | 0.48 kWh | 0.96 kWh | 4.80 kWh | 8.80 kWh |

50 Amps | 0.60 kWh | 1.20 kWh | 6.00 kWh | 11.0 kWh |

60 Amps | 0.72 kWh | 1.44 kWh | 7.20 kWh | 13.2 kWh |

70 Amps | 0.84 kWh | 1.68 kWh | 8.40 kWh | 15.4 kWh |

80 Amps | 0.96 kWh | 1.92 kWh | 9.60 kWh | 17.6 kWh |

90 Amps | 1.08 kWh | 2.16 kWh | 10.8 kWh | 19.8 kWh |

100 Amps | 1.20 kWh | 2.40 kWh | 12.0 kWh | 22.0 kWh |

150 Amps | 1.80 kWh | 3.60 kWh | 18.0 kWh | 33.0 kWh |

200 Amps | 2.40 kWh | 4.80 kWh | 24.0 kWh | 44.0 kWh |

250 Amps | 3.00 kWh | 6.00 kWh | 30.0 kWh | 55.0 kWh |

300 Amps | 3.60 kWh | 7.20 kWh | 36.0 kWh | 66.0 kWh |

350 Amps | 4.20 kWh | 8.40 kWh | 42.0 kWh | 77.0 kWh |

400 Amps | 4.80 kWh | 9.60 kWh | 48.0 kWh | 88.0 kWh |

450 Amps | 5.40 kWh | 10.8 kWh | 54.0 kWh | 99.0 kWh |

500 Amps | 6.00 kWh | 12.0 kWh | 60.0 kWh | 110 kWh |

600 Amps | 7.20 kWh | 14.4 kWh | 72.0 kWh | 132 kWh |

700 Amps | 8.40 kWh | 16.8 kWh | 84.0 kWh | 154 kWh |

800 Amps | 9.60 kWh | 19.2 kWh | 96.0 kWh | 176 kWh |

900 Amps | 10.8 kWh | 21.6 kWh | 108 kWh | 198 kWh |

1000 Amps | 12.0 kWh | 24.0 kWh | 120 kWh | 220 kWh |

As you can see, this chart will tell you exactly how many kWh will different amp devices use per hour.

It all depends on voltage:

- 1 amp at 12V will spend 0.012 kWh per hour.
- 1 amp at 24V will spend 0.024 kWh per hour.
- 1 amp at 120V will spend 0.12 kWh per hour.
- 1 amp at 220V will spend 0.22 kWh per hour.

If you still find converting amps to kWh a bit difficult, you can use the comments below, give us some numbers, and we’ll try to help you out as best we can.

Hello, Iâ€™m trying to figure out circuit breaker panel capacity if I need to upgrade my panel.

Current panel is 800amps.

Daily usage is 542kwh.

240v incoming power

Hi Simon, 800 amps is a huge current. 800 amps at 240V voltage results in 192,000 watts or 192 kW power. If you have a stable daily usage (542 kWh per day), you would need 542 kWh/ 24h = 22.6 kW power. Given these considerations, the 800 amp panel current is more than enough.

How much electricity unit consumed on below given load.

Load-17 ampere

Voltage- 440 volt

Time -60 minute

Hi Amitesh, first you calculate the wattage like this: 17A Ã— 440V = 7,480W. That’s 7.48kW. If you run it for 1 hour (60 minutes), that’s 7.48 kWh. Hope this helps.