BTU to kWh Converter

ConversionEdited by Hemant Kumar and Anjita Rai, founders · How we checkUpdated Free · No sign-up

Quick answer: To convert BTU to kWh, multiply by 0.0002930711. For example, 10 Btu is 0.002930711 kWh. One british thermal unit equals 0.0002930711 kWh.

Use the BTU to kWh Converter

BTU to kWh formula and what each symbol means

kWh = Btu × 0.0002930711

Symbols used in the formula
SymbolMeaning
BtuBritish thermal unit
kWhKilowatt hour

BTU to kWh examples

1 Btu

1 Btu × 0.0002930711 = 0.0002930711 kWh.

10 Btu

10 Btu × 0.0002930711 = 0.002930711 kWh.

100 Btu

100 Btu × 0.0002930711 = 0.02930711 kWh.

BTU compared with kWh

One kWh is 3,412 times as large as one Btu, so your number gets smaller when you convert BTU to kWh and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.

About BTU and kWh

British thermal unit (Btu): International Table British thermal unit, 1,055.05585262 joules. Kilowatt hour (kWh): Energy used by a 1 kW device in one hour, exactly 3.6 MJ.

Where BTU to kWh conversions are used

Engineering and physics calculations usually work in joules. Food labels show kilocalories or kilojoules, and electricity bills use kilowatt-hours.

How to calculate BTU to kWh step by step

  1. Enter the value in Btu (the starting unit).
  2. Multiply by 0.0002930711, because 1 Btu = 0.0002930711 kWh.
  3. The product is the value in kWh. To go back, divide by 0.0002930711 or multiply by 3,412.142.

Popular energy conversions

How to read your BTU to kWh result

Quick estimate: multiply by about 0.00029 to get kWh from BTU; this is within 1.1% of the exact factor. Food labels use the kilocalorie (kcal, written Calorie in the US), electricity bills use the kilowatt hour, and heating uses the Btu.

BTUKWH
10.0002930711
20.0005861421
50.001465355
100.002930711
200.005861421
500.01465355
1000.02930711
1,0000.2930711

kWh to BTU: quick table

KWHBTU
13,412.142
517,060.71
1034,121.42
2585,303.54
50170,607.1
100341,214.2
250853,035.4
5001,706,071

Common mistakes when calculating BTU to kWh

  • Using different Btu definitions: this tool uses the International Table Btu of 1,055.05585262 J.
  • Dividing when you should multiply: from Btu to kWh multiply by 0.0002930711; from kWh to Btu divide by 0.0002930711.

BTU to kWh FAQ

How many kWh are in 1 Btu?

1 Btu equals 0.0002930711 kWh.

How many Btu are in 1 kWh?

1 kWh equals 3,412.142 Btu.

Is 1 Btu = 0.0002930711 kWh an exact conversion?

Yes. The british thermal unit and the kilowatt hour are both defined exactly in SI terms, so the ratio has no measurement uncertainty; 0.0002930711 is just that ratio shown to 7 significant figures.

What is a kilowatt hour (kWh)?

Energy used by a 1 kW device in one hour, exactly 3.6 MJ.

How can I estimate BTU to kWh in my head?

Quick estimate: multiply by about 0.00029 to get kWh from BTU; this is within 1.1% of the exact factor.

What is 25 Btu in kWh?

25 Btu = 0.007326777 kWh (since 25 × 0.0002930711).

What is 80 Btu in kWh?

80 Btu = 0.02344569 kWh (since 80 × 0.0002930711).

What is 500 Btu in kWh?

500 Btu = 0.1465355 kWh (since 500 × 0.0002930711).

How many decimals should I keep when converting Btu to kWh?

Match the precision of your original measurement. For example, 0.002930711 kWh rounds to 0.00293 kWh at 3 significant figures; keep more digits only for engineering or scientific work.

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Method, review and disclaimer

Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors