Calculate electrical power vi.
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Electrical Energy Calculator
Quick answer
If power is 1.5 kW and time is 4 h, the energy is 6 kWh.
Enter your values
0 kW50 kW
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0 h24 h
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Energy
6kWh
The amount of energy involved, in the unit shown.
You enter Power 1.5 kW, Time 4 h. You get Energy 6 kWh.
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See how the result changes
Each table re-runs this calculator with one value changed and everything else left as it is.
Energy by power
If power goes from 1.5 kW to 2.25 kW, energy changes from 6 kWh to 9 kWh (+50%).
| Power | Energy |
|---|---|
| 0.75 kW | 3 kWh |
| 1.13 kW | 4.52 kWh |
| 1.5 kWstart | 6 kWh |
| 2.25 kW | 9 kWh |
| 3 kW | 12 kWh |
Energy by time
If time goes from 4 h to 6 h, energy changes from 6 kWh to 9 kWh (+50%).
| Time | Energy |
|---|---|
| 2 h | 3 kWh |
| 3 h | 4.5 kWh |
| 4 hstart | 6 kWh |
| 6 h | 9 kWh |
| 8 h | 12 kWh |
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How to Use the Electrical Energy Calculator
1
Enter Power
Provide your power, in kW.
2
Enter Time
Provide your time, in h.
3
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What Affects Your Energy
Your energy depends on the values below.
Power
Changing your power changes your energy.
Time
Changing your time changes your energy.
Example Result
Here's what you can expect from an electrical energy calculation:
- Power
- 1.5 kW
- Time
- 4 h
- Energy
- 6 kWh
Frequently Asked Questions
- How does power affect energy?
- If power goes from 1.5 kW to 2.25 kW, energy changes from 6 kWh to 9 kWh (+50%).
- How does time affect energy?
- If time goes from 4 h to 6 h, energy changes from 6 kWh to 9 kWh (+50%).
- How to calculate electrical energy?
- Fill in power and time in the Electrical Energy Calculator above and your energy is calculated instantly. Change any value to see how the result responds.
- What does an example electrical energy calculation look like?
- If power is 1.5 kW and time is 4 h, the energy is 6 kWh.
- Is this calculator free to use?
- Yes — every calculator on this site is completely free, with no sign-up or account required.
- How accurate is this calculator?
- It uses the standard formula and calculates on our server for every request, so results are precise for the values you enter.
- Is my data saved anywhere?
- No. Nothing you enter is stored or sent anywhere unless you choose to share a link with your values included.
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