At One Place

British thermal units to kilojoules

1 British thermal unit in kilojoules
1 BTU = 1.055056 kJ
kJ = BTU × 1.055055853

To convert British thermal units to kilojoules, multiply by 1.055055853. The table below gives the values people look up most often, and the converter works for any number.

British thermal units to kilojoules table

Common British thermal unit values converted to kilojoules.
British thermal units Kilojoules
1 BTU 1.055056
2 BTU 2.110112
3 BTU 3.165168
4 BTU 4.220223
5 BTU 5.275279
10 BTU 10.55056
15 BTU 15.82584
20 BTU 21.10112
25 BTU 26.3764
30 BTU 31.65168
40 BTU 42.20223
50 BTU 52.75279
75 BTU 79.12919
100 BTU 105.5056
250 BTU 263.764
500 BTU 527.5279
1,000 BTU 1,055.0559

How the conversion works

The relationship is kJ = BTU × 1.055055853. Both units measure energy, so the conversion is a fixed factor that never changes.

Common questions

How many kilojoules are in one British thermal unit?
One British thermal unit equals 1.055056 kilojoules. kJ = BTU × 1.055055853.
How do you convert British thermal units to kilojoules?
Use kJ = BTU × 1.055055853. So 10 BTU is 10.55056 kJ.
How many British thermal units are in one kilojoule?
One kilojoule equals 0.94782 British thermal units, which is the reverse of the conversion above.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked