BTU to Kilojoules Conversion (BTU to kJ)

British Thermal Units to Kilojoules Converter

Enter the energy in british thermal units below to get the value converted to kilojoules.

Results in Kilojoules:

1 BTU = 1.055056 kJ

How to Convert British Thermal Units to Kilojoules

To convert a british thermal unit measurement to a kilojoule measurement, multiply the energy by the conversion ratio.

Since one british thermal unit is equal to 1.055056 kilojoules, you can use this simple formula to convert:

kilojoules = british thermal units × 1.055056

The energy in kilojoules is equal to the british thermal units multiplied by 1.055056.

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

5 BTU = (5 × 1.055056) = 5.275279 kJ

How Many Kilojoules Are in a British Thermal Unit?

There are 1.055056 kilojoules in a british thermal unit, which is why we use this value in the formula above.

1 BTU = 1.055056 kJ

British thermal units and kilojoules 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 Kilojoule?

One kilojoule is equal to 1,000 joules, which is the energy equal to the force on an object of one newton at a distance of one meter.

The kilojoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "kilo" is the prefix for thousands, or 10³. Kilojoules can be abbreviated as kJ; for example, 1 kilojoule can be written as 1 kJ.

Learn more about kilojoules.

British Thermal Unit to Kilojoule Conversion Table

Table showing various British thermal unit measurements converted to kilojoules.
British Thermal Units	Kilojoules
1 BTU	1.0551 kJ
2 BTU	2.1101 kJ
3 BTU	3.1652 kJ
4 BTU	4.2202 kJ
5 BTU	5.2753 kJ
6 BTU	6.3303 kJ
7 BTU	7.3854 kJ
8 BTU	8.4404 kJ
9 BTU	9.4955 kJ
10 BTU	10.55 kJ
11 BTU	11.61 kJ
12 BTU	12.66 kJ
13 BTU	13.72 kJ
14 BTU	14.77 kJ
15 BTU	15.83 kJ
16 BTU	16.88 kJ
17 BTU	17.94 kJ
18 BTU	18.99 kJ
19 BTU	20.05 kJ
20 BTU	21.1 kJ
21 BTU	22.16 kJ
22 BTU	23.21 kJ
23 BTU	24.27 kJ
24 BTU	25.32 kJ
25 BTU	26.38 kJ
26 BTU	27.43 kJ
27 BTU	28.49 kJ
28 BTU	29.54 kJ
29 BTU	30.6 kJ
30 BTU	31.65 kJ
31 BTU	32.71 kJ
32 BTU	33.76 kJ
33 BTU	34.82 kJ
34 BTU	35.87 kJ
35 BTU	36.93 kJ
36 BTU	37.98 kJ
37 BTU	39.04 kJ
38 BTU	40.09 kJ
39 BTU	41.15 kJ
40 BTU	42.2 kJ

Table showing various British thermal unit measurements converted to kilojoules.

British Thermal Units

Kilojoules

1 BTU

1.0551 kJ

2 BTU

2.1101 kJ

3 BTU

3.1652 kJ

4 BTU

4.2202 kJ

5 BTU

5.2753 kJ

6 BTU

6.3303 kJ

7 BTU

7.3854 kJ

8 BTU

8.4404 kJ

9 BTU

9.4955 kJ

10 BTU

10.55 kJ

11 BTU

11.61 kJ

12 BTU

12.66 kJ

13 BTU

13.72 kJ

14 BTU

14.77 kJ

15 BTU

15.83 kJ

16 BTU

16.88 kJ

17 BTU

17.94 kJ

18 BTU

18.99 kJ

19 BTU

20.05 kJ

20 BTU

21.1 kJ

21 BTU

22.16 kJ

22 BTU

23.21 kJ

23 BTU

24.27 kJ

24 BTU

25.32 kJ

25 BTU

26.38 kJ

26 BTU

27.43 kJ

27 BTU

28.49 kJ

28 BTU

29.54 kJ

29 BTU

30.6 kJ

30 BTU

31.65 kJ

31 BTU

32.71 kJ

32 BTU

33.76 kJ

33 BTU

34.82 kJ

34 BTU

35.87 kJ

35 BTU

36.93 kJ

36 BTU

37.98 kJ

37 BTU

39.04 kJ

38 BTU

40.09 kJ

39 BTU

41.15 kJ

40 BTU

42.2 kJ