Convert kilojoule to British thermal unit
1 kJ = 0.9478171203 BTU
1 kJ = 0.94782 BTU
1 kJ in every energy unit
| electron volt | 6.2415e+21 eV |
| hartree | 2.2937e+20 Eh |
| kiloelectron volt | 6.2415e+18 keV |
| megaelectron volt | 6.2415e+15 MeV |
| gigaelectron volt | 6,241,500,000,000 GeV |
| nanojoule | 1,000,000,000,000 nJ |
| erg | 10,000,000,000 erg |
| teraelectron volt | 6,241,500,000 TeV |
| microjoule | 1,000,000,000 µJ |
| millijoule | 1,000,000 mJ |
| inch-pound | 8,850.7 in·lb |
| joule | 1,000 J |
| foot-pound | 737.56 ft⋅lb |
| calorie | 239.01 cal |
| calorie (International Table) | 238.85 cal IT |
| kilojoule | 1 kJ |
| BTU (thermochemical) | 0.94845 BTU th |
| British thermal unit | 0.94782 BTU |
| watt-hour | 0.27778 Wh |
| kilocalorie | 0.23901 kcal |
| megajoule | 0.001 MJ |
| horsepower-hour | 0.00037251 hp·h |
| kilowatt-hour | 0.00027778 kWh |
| therm | 0.0000094782 therm |
| gigajoule | 0.000001 GJ |
| million BTU | 9.4782e-07 MMBTU |
| megawatt-hour | 2.7778e-07 MWh |
| ton of TNT | 2.3901e-07 t TNT |
| tonne of oil equivalent | 2.3885e-08 toe |
| terajoule | 1.0000e-09 TJ |
| gigawatt-hour | 2.7778e-10 GWh |
| kiloton of TNT | 2.3901e-10 kt TNT |
| petajoule | 1.0000e-12 PJ |
| terawatt-hour | 2.7778e-13 TWh |
| megaton of TNT | 2.3901e-13 Mt TNT |
| quad | 9.4782e-16 quad |
How the conversion works
Multiply by 0.9478171203 to go from kilojoule to British thermal unit, or divide by it to go back. Every conversion on this site routes through the SI value (J) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? British thermal unit to kilojoule — 1 BTU = 1.055055853 kJ.
kilojoule to British thermal unit — common values
| 1 kJ | 0.94781712 BTU |
| 2 kJ | 1.8956342 BTU |
| 3 kJ | 2.8434514 BTU |
| 5 kJ | 4.7390856 BTU |
| 10 kJ | 9.4781712 BTU |
| 15 kJ | 14.217257 BTU |
| 20 kJ | 18.956342 BTU |
| 25 kJ | 23.695428 BTU |
| 50 kJ | 47.390856 BTU |
| 75 kJ | 71.086284 BTU |
| 100 kJ | 94.781712 BTU |
| 250 kJ | 236.95428 BTU |
| 500 kJ | 473.90856 BTU |
| 1000 kJ | 947.81712 BTU |