Kilojoule to BTU (IT) Converter

Energy Converter

27 units available

Decimals:

From

To

0.947817

1 kJ = 0.947817 BTU (IT)

Formula:

BTU (IT) = kJ × 0.9478171203

With your value: 1 kJ = 0.94781712 BTU (IT)

How big is that?

Everyday references on a logarithmic scale, all expressed in kilojoule so you can sanity-check the result.

Heartbeat (1/1.0e+3 your value)0.00100 kJ

Your value1.00 kJ

AA battery charge (10× your value)10.0 kJ

Slice of bread (2.8e+2× your value)280 kJ

Daily food intake (8.4e+3× your value)8.40e+3 kJ

Litre of petrol (3.4e+4× your value)3.42e+4 kJ

Other Kilojoule to BTU (IT) conversions

2 kJ to BTU (IT)3 kJ to BTU (IT)4 kJ to BTU (IT)5 kJ to BTU (IT)6 kJ to BTU (IT)7 kJ to BTU (IT)8 kJ to BTU (IT)

Kilojoule to BTU (IT) Conversion Table

Kilojoule (kJ)	BTU (IT) (BTU (IT))
0.5	0.473909
1	0.947817
2	1.895634
5	4.739086
10	9.478171
15	14.217257
20	18.956342
25	23.695428
50	47.390856
100	94.781712
250	236.95428
500	473.90856
1000	947.81712

BTU (IT) to Kilojoule Conversion Table

BTU (IT) (BTU (IT))	Kilojoule (kJ)
0.5	0.527528
1	1.055056
2	2.110112
5	5.275279
10	10.550559
15	15.825838
20	21.101117
25	26.376396
50	52.752793
100	105.505585
250	263.763963
500	527.527926
1000	1,055.055853

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Kilojoule (kJ)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

BTU (IT) (BTU (IT))

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Kilojoule to BTU (IT)

To convert from Kilojoule (kJ) to BTU (IT) (BTU (IT)), multiply the value by 0.9478171203.

Formula: BTU (IT) = kJ × 0.9478171203

Reverse: kJ = BTU (IT) × 1.0550558526

Step-by-Step Example

Start with your value in Kilojoule. For example: 5 kJ
Multiply by the conversion factor: 5 x 0.9478171203
The result is: 4.739086 BTU (IT)

About Kilojoule

The kilojoule (kJ) is a unit of energy and work. One kilojoule equals 1000 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

About BTU (IT)

The btu (it) (BTU (IT)) is a unit of energy and work. One btu (it) equals 1055.055853 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

Frequently Asked Questions

How many BTU (IT) are in 1 Kilojoule?

There are exactly 0.9478171203 BTU (IT) in 1 Kilojoule. This means the conversion factor from Kilojoule to BTU (IT) is 0.9478171203.

What is the formula to convert Kilojoule to BTU (IT)?

The formula to convert Kilojoule to BTU (IT) is: BTU (IT) = kJ × 0.9478171203. For example, to convert 10 Kilojoule to BTU (IT), you would multiply 10 by 0.9478171203.

What is a Kilojoule?