BTU to Joules Conversion (BTU to J)

British Thermal Units to Joules Converter

Enter the energy in british thermal units below to convert it to joules.

Result in Joules:

1 BTU = 1,055.055853 J

How to Convert British Thermal Units to Joules

To convert a measurement in british thermal units to a measurement in joules, multiply the energy by the following conversion ratio: 1,055.055853 joules/british thermal unit.

Since one british thermal unit is equal to 1,055.055853 joules, you can use this simple formula to convert:

joules = british thermal units × 1,055.055853

The energy in joules is equal to the energy in british thermal units multiplied by 1,055.055853.

For example, here's how to convert 5 british thermal units to joules using the formula above.

joules = (5 BTU × 1,055.055853) = 5,275.279263 J

conversion scale showing british thermal units and equivalent joules energy values

How Many Joules Are in a British Thermal Unit?

There are 1,055.055853 joules in a british thermal unit, which is why we use this value in the formula above.

1 BTU = 1,055.055853 J

British thermal units and joules are both units used to measure energy. Keep reading to learn more about each unit of measure.

What Is a British Thermal Unit?

British thermal units are a measure of heat energy. Specifically, one british thermal unit is equal to the amount of heat energy required to increase the temperature of one pound of water one degree Fahrenheit. They are often used as a way to rate the energy heat producing appliances such furnaces, and to price heating fuels such as natural gas.

The british thermal unit is a US customary unit of energy. British thermal units can be abbreviated as BTU; for example, 1 british thermal unit can be written as 1 BTU.

Learn more about british thermal units.

What Is a Joule?

The joule is the energy equal to the force on an object of one newton at a distance of one meter.^[1] One joule is equal to the heat energy dissipated by the current of one ampere through one ohm of resistance for one second.

One joule is also equal to the energy needed to move an electric charge of one coulomb through a potential difference of one volt. In addition, one joule is also equal to the one watt-second.

The joule is the SI derived unit for energy in the metric system. Joules can be abbreviated as J; for example, 1 joule can be written as 1 J.

Learn more about joules.

British Thermal Unit to Joule Conversion Table

Table showing various british thermal unit measurements converted to joules.
British Thermal Units	Joules
0.001 BTU	1.0551 J
0.002 BTU	2.1101 J
0.003 BTU	3.1652 J
0.004 BTU	4.2202 J
0.005 BTU	5.2753 J
0.006 BTU	6.3303 J
0.007 BTU	7.3854 J
0.008 BTU	8.4404 J
0.009 BTU	9.4955 J
0.01 BTU	10.55 J
0.02 BTU	21.1 J
0.03 BTU	31.65 J
0.04 BTU	42.2 J
0.05 BTU	52.75 J
0.06 BTU	63.3 J
0.07 BTU	73.85 J
0.08 BTU	84.4 J
0.09 BTU	94.96 J
0.1 BTU	105.51 J
0.2 BTU	211.01 J
0.3 BTU	316.52 J
0.4 BTU	422.02 J
0.5 BTU	527.53 J
0.6 BTU	633.03 J
0.7 BTU	738.54 J
0.8 BTU	844.04 J
0.9 BTU	949.55 J
1 BTU	1,055 J

Table showing various british thermal unit measurements converted to joules.

British Thermal Units

Joules

0.001 BTU

1.0551 J

0.002 BTU

2.1101 J

0.003 BTU

3.1652 J

0.004 BTU

4.2202 J

0.005 BTU

5.2753 J

0.006 BTU

6.3303 J

0.007 BTU

7.3854 J

0.008 BTU

8.4404 J

0.009 BTU

9.4955 J

0.01 BTU

10.55 J

0.02 BTU

21.1 J

0.03 BTU

31.65 J

0.04 BTU

42.2 J

0.05 BTU

52.75 J

0.06 BTU

63.3 J

0.07 BTU

73.85 J

0.08 BTU

84.4 J

0.09 BTU

94.96 J

0.1 BTU

105.51 J

0.2 BTU

211.01 J

0.3 BTU

316.52 J

0.4 BTU

422.02 J

0.5 BTU

527.53 J

0.6 BTU

633.03 J

0.7 BTU

738.54 J

0.8 BTU

844.04 J

0.9 BTU

949.55 J

1 BTU

1,055 J

References

International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf