kWh to kBtu Converter
A home that uses 10,000 kWh of electricity in a year has used about 34,121 kBtu.
Quick answer: Multiply the kWh by 3.412 to get kBtu. For example, 10 kWh is 34.121 kBtu, 10,000 kWh is 34,121.42 kBtu and 250 kWh is 853.04 kBtu.
The kWh to kBtu formula
kBtu equals kWh times 3.412. One kWh is 3,412 Btu, and one kBtu is 1,000 Btu (EIA: Energy conversion calculators).
Multiply the kWh by 3,412 to get plain Btu.
Take 10 kWh. 10 × 3.412 gives 34.121 kBtu.
Take 10,000 kWh. 10,000 × 3.412 gives 34,121.42 kBtu.
kWh, Btu and kBtu
A kWh is how electricity is billed. A Btu is a small unit of heat, used for fuels and for heating and cooling equipment.
A kBtu is 1,000 Btu. It is handy because it keeps the numbers short.
How to convert kWh to kBtu step by step
- Enter the energy in kWh.
- Multiply it by 3.412.
- Read the answer in kBtu.
- Use the last column if you need plain Btu.
Example 1: 10 kWh
- Start with 10 kWh.
- 10 × 3.412 = 34.121.
- The energy is 34.121 kBtu.
10 kWh = 34.121 kBtu
Example 2: 10,000 kWh
- Start with 10,000 kWh.
- 10,000 × 3.412 = 34,121.42.
- The energy is 34,121.42 kBtu.
10,000 kWh = 34,121.42 kBtu
Example 3: 250 kWh
- Start with 250 kWh.
- 250 × 3.412 = 853.04.
- The energy is 853.04 kBtu.
250 kWh = 853.04 kBtu
The factor is the same for any source of electricity. It converts the units only, and does not account for losses in power plants.
kWh to kBtu conversion table
| Energy | kBtu | Btu |
|---|---|---|
| 1 kWh | 3.412 kBtu | 3,412.14 Btu |
| 5 kWh | 17.061 kBtu | 17,060.71 Btu |
| 10 kWh | 34.121 kBtu | 34,121.42 Btu |
| 25 kWh | 85.304 kBtu | 85,303.55 Btu |
| 50 kWh | 170.61 kBtu | 170,607.1 Btu |
| 100 kWh | 341.21 kBtu | 341,214.2 Btu |
| 250 kWh | 853.04 kBtu | 853,035.5 Btu |
| 500 kWh | 1,706.07 kBtu | 1,706,071 Btu |
| 1,000 kWh | 3,412.14 kBtu | 3,412,142 Btu |
| 10,000 kWh | 34,121.42 kBtu | 34,121,420 Btu |
The highlighted row is the default of the calculator. The last column gives Btu.
A quick mental shortcut for kWh to kBtu
Multiply by 3.4 for a quick answer. So 100 kWh is about 340 kBtu.
To go back, divide the kBtu by 3.4.
kBtu and MMBtu
A kBtu is 1,000 Btu and an MMBtu is 1,000,000 Btu. So 1 MMBtu is 1,000 kBtu (EIA: Energy conversion calculators).
One MMBtu is about 293.08 kWh.
A building benchmark
EIA reports that US commercial buildings used about 70,400 Btu per square foot in 2018 (EIA: Use of energy in commercial buildings in depth).
That is 70.4 kBtu per square foot, or about 20.632 kWh per square foot.
Gas bills and therms
A therm is 100,000 Btu (EIA: Energy conversion calculators). That is 100 kBtu, or about 29.307 kWh.
This lets you compare an electricity bill in kWh with a gas bill in therms.
Megajoules
One kWh is also 3.6 MJ (Wikipedia: Watt). So 10 kWh is 36 MJ and 34.121 kBtu.
Pick the unit that your report or country uses.
Site energy versus source energy
The factor on this page converts units at the meter. It does not include the fuel burned to make the electricity.
Some reports use a different number for source energy, so check which one you need.
Going the other way
To get kWh from kBtu, divide by 3.412.
For 34.12 kBtu, the energy is 9.9996 kWh.
Check your answer
Divide your kBtu by 3.412. You should get the original kWh.
For 341.2 kBtu the result is about 100 kWh, which matches.
A monthly bill example
A home that uses 800 kWh in a month has used about 2,729.6 kBtu. Over twelve months at the same rate, that is about 32,755 kBtu.
Energy per square foot
A 2,000 square foot home that uses 34,121 kBtu a year has an energy use of about 17.061 kBtu per square foot.
This lets you compare homes of different sizes.
When a bill shows both units
Some bills list electricity in kWh and gas in kBtu or therms. Convert the electricity to kBtu so that both fuels are in the same unit before you add them.
A heating season example
A household that uses 3,000 kWh for electric heating in a winter has used about 10,236 kBtu for that heat.
Comparing that with a gas bill in kBtu shows which fuel supplied more of the heat.
Quick conversion answers
| Conversion | Result |
|---|---|
| 2 kWh | 6.824 kBtu |
| 15 kWh | 51.182 kBtu |
| 75 kWh | 255.91 kBtu |
| 400 kWh | 1,364.86 kBtu |
| 2,500 kWh | 8,530.36 kBtu |
| 20,000 kWh | 68,242.84 kBtu |
A month of bills
A home that uses 850 kWh in a month has used about 2,900 kBtu. Twelve such months give about 34,804 kBtu.
Add the months first, then convert the total once.
How many digits to keep
The factor 3.412 is enough for bills and reports. Using 3.4 instead gives an error of about 0.4 percent.
Keep more digits when you add up many meters, and round only the final total.
Where this conversion is used
Energy managers report building energy in a single unit.
Homeowners compare electricity and gas use on one scale.
Analysts convert utility data for audits and benchmarks.
Common mistakes to avoid
- Mixing Btu and kBtu. One kBtu is 1,000 Btu. Check the prefix on the report.
- Mixing kBtu and MMBtu. One MMBtu is 1,000 kBtu, not 1 kBtu.
- Mixing site and source energy. This page gives site energy only.
- Dividing instead of multiplying. kWh to kBtu uses 3.412 as a multiplier.
Related converters
Frequently asked questions
How do I convert kWh to kBtu?
Multiply the kWh by 3.412.
How many Btu is 1 kWh?
It is 3,412 Btu.
How many kBtu is 10,000 kWh?
It is about 34,121 kBtu.
What is the difference between kBtu and MMBtu?
One MMBtu is 1,000 kBtu, which is one million Btu.
How many kWh is a therm?
About 29.3 kWh.
Does the factor include power plant losses?
No. It converts the units only.
Sources
- EIA: Energy conversion calculators (eia.gov)
- EIA: Use of energy in commercial buildings in depth (eia.gov)
- Wikipedia: Watt (en.wikipedia.org)
