BTU (IT) to Kilojoule Converter
Quick answer
To convert BTU (IT)s to Kilojoules, multiply by 1.0550558526 (or divide by 0.9478171203). Therefore, 1 BTU (IT) (BTU (IT)) equals 1.05505585 Kilojoules (kJ).
Formula: kJ = BTU (IT) × 1.0550558526. Worked example: 10 BTU (IT) = 10.550559 kJ.
Convert BTU (IT) (BTU (IT)) to Kilojoule (kJ) online with our free unit converter. In energy, 1 BTU (IT) = 1.055056 kJ. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting BTU (IT) to Kilojoule
- Step 1 — start with the formula. kJ = BTU (IT) × 1.0550558526
- Step 2 — substitute your figure. 10 BTU (IT) × 1.0550558526
- Step 3 — read the result. 10 BTU (IT) = 10.550559 kJ
- Step 4 — check it in reverse. BTU (IT) = kJ × 0.9478171203 returns 10 BTU (IT), which matches the figure you started with.
Energy Converter
27 units available
1 BTU (IT) = 1.055056 kJ
Formula:
kJ = BTU (IT) × 1.0550558526With your value: 1 BTU (IT) = 1.05505585 kJ
How big is that?
Everyday references on a logarithmic scale, all expressed in btu (it) so you can sanity-check the result.
Other BTU (IT) to Kilojoule conversions
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 |
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 |
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.
BTU (IT) (BTU (IT))
Energy
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
Kilojoule (kJ)
Energy
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 BTU (IT) to Kilojoule
To convert from BTU (IT) (BTU (IT)) to Kilojoule (kJ), multiply the value by 1.0550558526.
Formula: kJ = BTU (IT) × 1.0550558526
Reverse: BTU (IT) = kJ × 0.9478171203
Step-by-Step Example
- Start with your value in BTU (IT). For example: 5 BTU (IT)
- Multiply by the conversion factor: 5 x 1.0550558526
- The result is: 5.275279 kJ
BTU (IT) and Kilojoule Relationship
This conversion bridges the US Customary / Imperial and Metric (SI) measurement systems, commonly required when translating scientific data, international engineering specifications, or trade standards. Since 1 BTU (IT) equals approximately 1.0551 Kilojoules, the BTU (IT) represents a larger unit interval than the Kilojoule. Understanding the relationship between BTU (IT) and Kilojoule is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About BTU (IT)
The BTU (IT) (symbol: BTU (IT)) is a recognized unit in the US Customary / Imperial measurement framework, utilized within energy applications for precision and standardized data representation.
Common uses of BTU (IT): energy calculations, engineering and science, education.
About Kilojoule
The Kilojoule (symbol: kJ) is a recognized unit in the Metric (SI) measurement framework, utilized within energy applications for precision and standardized data representation.
Common uses of Kilojoule: energy calculations, engineering and science, education.
Frequently Asked Questions
- How many Kilojoules are in 1 BTU (IT)?
- There are exactly 1.0550558526 Kilojoules in 1 BTU (IT). This means the conversion factor from BTU (IT) to Kilojoule is 1.0550558526.
- What is the formula to convert BTU (IT) to Kilojoule?
- The formula to convert BTU (IT) to Kilojoule is: kJ = BTU (IT) × 1.0550558526. For example, to convert 10 BTU (IT)s to Kilojoules, you would multiply 10 by 1.0550558526.
- What is a BTU (IT)?
- The BTU (IT) (symbol: BTU (IT)) is a recognized unit in the US Customary / Imperial measurement framework, utilized within energy applications for precision and standardized data representation.
- What is a Kilojoule?
- The Kilojoule (symbol: kJ) is a recognized unit in the Metric (SI) measurement framework, utilized within energy applications for precision and standardized data representation.
- What are the common uses of BTU (IT)?
- The BTU (IT) is commonly used in energy calculations, engineering and science, education.
Related Energy Conversions
Cite this page
UnitConvertLab. (2026). BTU (IT) to Kilojoule converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/btu_it-to-kilojoule