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Convert british thermal unit to kilojoule

Here you can quickly calculate how many kilojoule fit in one british thermal unit.
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- scroll: formula · table · questions -

  • 1 BTU = 1.055056 kJ
  • 1 kJ = 0.947817 BTU

Example: british thermal unit to kilojoule

  • 1 british thermal unit = 1.055056 kilojoule

British thermal unit to kilojoule conversion table

british thermal unit kilojoule
1 1.055056
2 2.110112
5 5.275279
10 10.550559
20 21.101117
50 52.752793
100 105.505585

British thermal unit to kilojoule formula

To convert british thermal unit to kilojoule, multiply by 1.055056.

1 BTU = 1.055056 kJ
Example: 1 british thermal unit = 1.055056 kilojoule

Common energy conversion mistakes

  • The relationship is exact: 1 kWh = 3.6 MJ (3,600 kJ, because an hour has 3,600 seconds). The common slip is dividing when you should multiply: 10 kWh is 36 MJ, not 2.8. Remember the direction: kWh → MJ means times 3.6.
  • The 'BTU' rating on AC units and heat pumps almost always means BTU per hour, a power, not an amount of energy. A '12,000 BTU' unit delivers about 3.5 kW of cooling continuously, not a fixed energy budget. Compare via 1 kW ≈ 3,412 BTU/h.

Quick british thermal unit and kilojoule conversion quiz

Score: 0

14.3 british thermal unit equals 12.8 kilojoule.

Correct answer: 14.3 british thermal unit = 15.1 kilojoule.

19.7 british thermal unit equals 23.9 kilojoule.

Correct answer: 19.7 british thermal unit = 20.8 kilojoule.

72 british thermal unit equals 76 kilojoule.

Correct answer: 72 british thermal unit = 76 kilojoule.

12.6 kilojoule equals 13.1 british thermal unit.

Correct answer: 12.6 kilojoule = 11.9 british thermal unit.

19.1 kilojoule equals 19.9 british thermal unit.

Correct answer: 19.1 kilojoule = 18.1 british thermal unit.

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