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Kilowatt-hour to Btu Converter

Enter the value that you want to convert kilowatt-hour (kW/h) to Btu (Btu) or Btu to kilowatt-hour.Also written as KW/H to BTU conversion.

1 kilowatt-hour = 3412.1416331 Btu

Formula: Btu = kilowatt-hour value × 3412.1416331

KW/H to BTU — kilowatt-hour to Btu

kW/h
34121.41633Btu

10 kilowatt-hour = 34121.41633 Btu

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Why Convert Kilowatt-hour to Btu?

What is Kilowatt-hour?

Kilowatt-hour (kW/h) is a unit of energy measurement. 1 kilowatt-hour is equal to 3412.1416331 Btu.

About the Btu

Btu (Btu) is a unit of energy measurement. 1 Btu is equal to 0.0002931 kilowatt-hour.

Energy Units in Different Fields

Energy measurement units reflect their historical origins across different industries. Electrical engineers use kilowatt-hours, nutritionists use calories, physicists use joules, heating engineers use BTUs, and the petroleum industry uses barrels of oil equivalent. Converting between these units is essential for energy auditing, comparing fuel sources, sizing HVAC systems, and understanding electricity bills relative to gas consumption.

kilowatt-hour to Btu metric conversion table

0.01 kW/h=34.12142 Btu
0.1 kW/h=341.21416 Btu
1 kW/h=3412.14163 Btu
2 kW/h=6824.28327 Btu
3 kW/h=10236.42490 Btu
4 kW/h=13648.56653 Btu
5 kW/h=17060.70817 Btu
6 kW/h=20472.84980 Btu
7 kW/h=23884.99143 Btu
8 kW/h=27297.13307 Btu
9 kW/h=30709.27470 Btu
10 kW/h=34121.41633 Btu
11 kW/h=37533.55796 Btu
12 kW/h=40945.69960 Btu
13 kW/h=44357.84123 Btu
14 kW/h=47769.98286 Btu
15 kW/h=51182.12450 Btu
16 kW/h=54594.26613 Btu
17 kW/h=58006.40776 Btu
18 kW/h=61418.54940 Btu
19 kW/h=64830.69103 Btu
20 kW/h=68242.83266 Btu
30 kW/h=102364.24899 Btu
40 kW/h=136485.66533 Btu
50 kW/h=170607.08166 Btu
60 kW/h=204728.49799 Btu
70 kW/h=238849.91432 Btu
80 kW/h=272971.33065 Btu
90 kW/h=307092.74698 Btu
100 kW/h=341214.16331 Btu
200 kW/h=682428.32663 Btu
300 kW/h=1023642.48994 Btu
400 kW/h=1364856.65325 Btu
500 kW/h=1706070.81656 Btu
600 kW/h=2047284.97988 Btu
700 kW/h=2388499.14319 Btu
800 kW/h=2729713.30650 Btu
900 kW/h=3070927.46982 Btu
1000 kW/h=3412141.63313 Btu

How to Convert KW/H to BTU (Kilowatt-hour to Btu)?

We can convert kilowatt-hour to Btu by using an example.

Example:

Convert 20 Kilowatt-hour to Btu?

We know 1 Kilowatt-hour = 3412.1416331 Btu; 1 Btu = 0.0002931 kilowatt-hour.

20 kilowatt-hour = ___Btu

20 × 3412.1416331 = 68242.83266 Btu (we know 1 kilowatt-hour = 3412.1416331 Btu)

Answer:

20 kilowatt-hour = 68242.83266 Btu

How to Convert Kilowatt-Hours to BTU (Step-by-Step)

Converting kWh to BTU bridges electrical energy (utility billing) with thermal energy (HVAC ratings). The conversion factor is 1 kWh = 3412.14 BTU. This is essential for comparing electric vs gas heating costs.

  1. Identify the electrical energy in kilowatt-hours.
  2. Multiply by 3412.14 to convert to BTU.
  3. For large values, divide by 100,000 to express in therms.
  4. This conversion is used to compare electric vs. gas heating economics.
💡 Tip: For quick math: 1 kWh ≈ 3400 BTU. So 10 kWh ≈ 34,000 BTU. This is within 0.4% of exact.

Common kWh to BTU Conversions

Reference values comparing electricity usage to equivalent BTU heating values — essential for electric vs gas cost analysis.

Kilowatt-hourBtu
1 kWh3,412 BTU
3 kWh10,236 BTU
5 kWh17,061 BTU
10 kWh34,121 BTU
29.3 kWh100,000 BTU
50 kWh170,607 BTU
900 kWh3,070,930 BTU

Solved Examples: kWh to BTU

Question 1: An electric water heater uses 12 kWh per day. How many BTU is that?

Solution:

Start with 12 kWh.

Multiply by 3412.14: 12 × 3412.14 = 40,945.7 BTU.

Answer: 12 kWh = 40,946 BTU/day

Question 2: Comparing heating: your electric heater uses 1.5 kWh/hr. What is the BTU/hr equivalent?

Solution:

Start with 1.5 kWh/hr = 1.5 kW.

Multiply by 3412.14: 1.5 × 3412.14 = 5,118.2 BTU/hr.

This compares directly to gas heater BTU/hr ratings.

Answer: 1.5 kWh/hr = 5,118 BTU/hr (equivalent to a small gas heater)

Question 3: Your home used 950 kWh last month. Express in therms for comparison with gas.

Solution:

Start with 950 kWh.

Multiply by 3412.14: 950 × 3412.14 = 3,241,533 BTU.

Convert to therms: 3,241,533 ÷ 100,000 = 32.4 therms equivalent.

Answer: 950 kWh = 3,241,533 BTU = 32.4 therms equivalent

Practice: kWh to BTU

Try solving these on your own to test your understanding:

  1. Convert 5 kWh to BTU. (Answer: 17,061 BTU)
  2. An electric furnace uses 20 kWh/hr. Express in BTU/hr. (Answer: 68,243 BTU/hr)
  3. Convert 100 kWh to BTU and therms. (Answer: 341,214 BTU = 3.41 therms)
  4. A heat pump uses 3 kWh to deliver 9 kWh of heat. Express the delivered heat in BTU. (Answer: 30,709 BTU)
  5. Convert 0.5 kWh to BTU. (Answer: 1,706 BTU)

Electric vs Gas Heating: Cost Comparison Using BTU

To compare electric and gas heating costs, convert both to cost-per-BTU. If electricity costs $0.12/kWh, that is $0.12/3412 BTU = $35.16 per million BTU. If natural gas costs $1.20/therm, that is $1.20/100,000 BTU = $12.00 per million BTU. Gas appears cheaper per BTU, but electric heat pumps with COP of 3.0 effectively deliver 3× the BTU per kWh, making them cost-competitive at $11.72 per million BTU delivered.

Understanding the 3412 Factor

The factor 3412.14 BTU/kWh comes from: 1 kWh = 3,600,000 J, and 1 BTU = 1055.06 J. So 3,600,000 ÷ 1055.06 = 3412.14 BTU. This exact relationship means that a 1 kW (1000W) electric heater produces 3412 BTU/hr of heat — useful for sizing electric heating systems or comparing them to gas alternatives.

Heat Pump Efficiency and the kWh-to-BTU Relationship

Heat pumps are rated by SEER (cooling) or HSPF (heating) in BTU/Wh. An HSPF of 10 means the heat pump delivers 10 BTU per watt-hour, or 10,000 BTU per kWh. Since a resistance heater delivers 3,412 BTU per kWh, an HSPF-10 heat pump is 10,000/3,412 = 2.93× more efficient. This is why heat pumps are increasingly preferred for home heating in moderate climates.

Key Takeaways

  • Multiply kWh by 3412.14 to get BTU.
  • 1 kWh = 3,412 BTU; 29.3 kWh = 1 therm (100,000 BTU).
  • A 1 kW electric heater produces 3,412 BTU/hr.
  • To compare electric vs gas: divide cost/kWh by 3412 for electric cost-per-BTU.
  • Heat pumps can deliver 2–4× more BTU per kWh than resistance heaters.
  • Average US home: 900 kWh/month ≈ 3.07 million BTU of electrical energy.

Kilowatt-hour to Btu Conversion Formula

Btu = kilowatt-hour × 3412.1416331

1 kilowatt-hour = 3412.1416331 Btu

1 Btu = 0.0002931 kilowatt-hour

Reverse: kilowatt-hour = Btu × 0.0002931

Frequently Asked Questions

How many Btu are in 1 kilowatt-hour?

There are 3412.1416331 Btu in 1 kilowatt-hour. To convert kilowatt-hour to Btu, multiply the value by 3412.1416331.

How do I convert kilowatt-hour to Btu?

Multiply your kilowatt-hour value by 3412.1416331 to get the equivalent in Btu. For example, 5 kilowatt-hour = 5 × 3412.1416331 = 17060.70817 Btu.

How do I convert Btu to kilowatt-hour?

Multiply your Btu value by 0.0002931 to get the equivalent in kilowatt-hour. Alternatively, divide by 3412.1416331.

What is 10 kilowatt-hour in Btu?

10 kilowatt-hour is equal to 34121.41633 Btu.

What is 100 kilowatt-hour in Btu?

100 kilowatt-hour is equal to 341214.16331 Btu.