Amps To kWh Calculator: Calculate kWh From Amps

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 electric current. If we multiply amps by voltage, we get watts (units of electric power).
• Kilowatt-hours (kWh) are units of electric energy. 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.

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

kWh = Amps × Volts × 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 × 120 Volts × 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):

1. How many amps we are using (1st slider in the calculator).
2. What kind of voltage we are using (2nd slider in the calculator).
3. 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

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.