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kWh to kW Calculator
Enter the energy in kWh and the time it was used over to find the average power in kW. Handy for reading electricity bills, sizing batteries and checking solar output.
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How to use the kWh to kW Calculator
- Enter the energy in kWh, for example from your electricity bill.
- Set the time period: a number and a unit such as hours, days or months.
- Read the average power in kW, plus watts, daily energy and current.
- Try a scenario button to see a bill, battery or solar example.
- Need kWh from kW? Type in the kW box or press ⇄.
kWh to kW formula
kW = kWh ÷ hours
- Take the energy in kilowatt-hours (from a bill, battery spec or solar monitor).
- Convert the time period to hours (1 day = 24 h, 1 average month ≈ 730 h, 1 year = 8,760 h).
- Divide energy by hours to get the average power in kW.
Bill example: a home that used 900 kWh in a month averaged 900 ÷ 730 = 1.233 kW around the clock.
Battery example: a 13.5 kWh battery emptied evenly over 5 hours delivers 13.5 ÷ 5 = 2.7 kW.
Solar example: panels that produced 40 kWh between 8 am and 4 pm (8 h) averaged 40 ÷ 8 = 5 kW, even though the midday peak was higher.
The answer is an average. Real demand rises and falls: a home averaging 1.2 kW may briefly draw 8 kW when the oven, dryer and AC run together.
kWh to kW table
Values follow the time period chosen in the calculator (1 month of 730 hours by default). Click a row to load it.
kWh to average kW over 1 month
| Kilowatt-hours | Kilowatts (average) |
|---|---|
| 1 kWh | 0.001 kW |
| 2 kWh | 0.003 kW |
| 5 kWh | 0.007 kW |
| 10 kWh | 0.014 kW |
| 13.5 kWh | 0.018 kW |
| 15 kWh | 0.021 kW |
| 20 kWh | 0.027 kW |
| 25 kWh | 0.034 kW |
| 30 kWh | 0.041 kW |
| 40 kWh | 0.055 kW |
| 50 kWh | 0.068 kW |
| 60 kWh | 0.082 kW |
| 75 kWh | 0.103 kW |
| 100 kWh | 0.137 kW |
| 150 kWh | 0.205 kW |
| 200 kWh | 0.274 kW |
| 250 kWh | 0.342 kW |
| 300 kWh | 0.411 kW |
| 400 kWh | 0.548 kW |
| 500 kWh | 0.685 kW |
| 600 kWh | 0.822 kW |
| 700 kWh | 0.959 kW |
| 750 kWh | 1.027 kW |
| 800 kWh | 1.096 kW |
| 900 kWh | 1.233 kW |
| 1,000 kWh | 1.37 kW |
| 1,200 kWh | 1.644 kW |
| 1,500 kWh | 2.055 kW |
| 2,000 kWh | 2.74 kW |
| 2,500 kWh | 3.425 kW |
| 3,000 kWh | 4.11 kW |
| 5,000 kWh | 6.849 kW |
| 7,500 kWh | 10.274 kW |
| 10,000 kWh | 13.699 kW |
Average kW to kWh over 1 month
| Kilowatts (average) | Kilowatt-hours |
|---|---|
| 0.1 kW | 73 kWh |
| 0.25 kW | 182.5 kWh |
| 0.5 kW | 365 kWh |
| 0.75 kW | 547.5 kWh |
| 1 kW | 730 kWh |
| 1.5 kW | 1,095 kWh |
| 2 kW | 1,460 kWh |
| 2.5 kW | 1,825 kWh |
| 3 kW | 2,190 kWh |
| 4 kW | 2,920 kWh |
| 5 kW | 3,650 kWh |
| 6 kW | 4,380 kWh |
| 7.5 kW | 5,475 kWh |
| 10 kW | 7,300 kWh |
| 12 kW | 8,760 kWh |
| 15 kW | 10,950 kWh |
| 20 kW | 14,600 kWh |
| 25 kW | 18,250 kWh |
| 50 kW | 36,500 kWh |
| 75 kW | 54,750 kWh |
| 100 kW | 73,000 kWh |
Common values over 1 month
| Kilowatt-hours | Kilowatts (average) | Example |
|---|---|---|
| 13.5 kWh | 0.018 kW | Home battery, 13.5 kWh |
| 30 kWh | 0.041 kW | Daily use, typical home |
| 60 kWh | 0.082 kW | EV battery pack |
| 300 kWh | 0.411 kW | Small apartment, monthly bill |
| 900 kWh | 1.233 kW | Typical US home, monthly bill |
| 1,500 kWh | 2.055 kW | Large home with electric heat, monthly |
| 10,800 kWh | 14.795 kW | Typical US home, yearly |
When kWh to kW is useful
- Understanding a bill: dividing monthly kWh by 730 shows your average load. Comparing it with the bill's peak demand (in kW, if listed) reveals how spiky your use is.
- Batteries: a battery's kWh capacity divided by the hours you need it to last gives the steady power it can supply. Check that this is within the battery's continuous kW rating.
- Solar sizing: divide daily use by your local peak sun hours (often 3 to 6) for a first estimate of array size in kW. Add 15–25% for real-world losses from heat, wiring and the inverter.
- Generators: average kW tells you how much fuel a generator will burn over time, but size the generator for the peak, not the average.
Frequently asked questions
How do you convert kWh to kW?
Divide the energy in kWh by the time in hours: kW = kWh ÷ hours. For example, 12 kWh used over 4 hours is an average of 3 kW.
Can you convert kWh to kW without a time?
No. kWh is energy and kW is power, so you need the time over which the energy was used. The same 10 kWh is 10 kW over one hour but only about 0.42 kW over a day.
How many kW is 900 kWh per month?
An average month has about 730 hours, so 900 kWh per month is an average of about 1.23 kW.
How many hours are in a month for kWh to kW?
An average month has 8,760 ÷ 12 = 730 hours. A 30-day month has 720 hours and a 31-day month has 744 hours.
What size solar system do I need for 30 kWh per day?
With 4 peak sun hours, 30 ÷ 4 = 7.5 kW of panels, before losses. Real systems usually need 15–25% more to cover heat, wiring and inverter losses.
Why is my peak demand higher than the average kW?
Appliances switch on and off. The average spreads energy evenly over the period, while peak demand is the highest power drawn at any moment.
Are all the tools on FreeToolCabin tested for quality and accuracy?
Yes! Every tool on our site undergoes automated Q/A testing in real browser environments to ensure high precision, correct output, and zero errors. If you happen to spot a bug or have a suggestion, please contact us at [email protected] and our team will review it right away.
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