NiftyRecipe Online energy conversion
kWh/MJ 3.6 kJ/BTU 0.947817 MJ/cal 239005.736138 BTU/kcal 0.252164 MJ/kWh 0.277778 kJ/MJ 0.001
BTU / J

British thermal unit to Joule converter

1 BTU = 1055.055853 J

This is the British thermal unit to Joule converter. 1 BTU = 1055.0558526200114 J.

Enter a value and click Calculate - opens the page with the new result

Common values

joule to BTU 2 BTUs in joule 3 BTUs in joule 4 BTUs in joule 5 BTUs in joule 6 BTUs in joule 8 BTUs in joule 10 BTUs in joule 12 BTUs in joule 15 BTUs in joule 20 BTUs in joule

Same amount, other units

1 BTU → kcal 1 BTU → cal 1 BTU → kJ 1 BTU → kWh 1 BTU → MJ

Related converters

BTU → kcal BTU → cal BTU → kJ BTU → kWh BTU → MJ
Formula: BTU to joule

J = BTU × 1055.055853 (1 BTU = 1055.055853 J)

Reference values: BTU → joule
BTU J
1 BTU 1055.055853 J
100 BTU 105505.585262 J
200 BTU 211011.170524 J
500 BTU 527527.92631 J
1000 BTU 1055055.85262 J
2000 BTU 2110111.70524 J
Common conversions
1 BTU → 1055.055853 J 2 BTU → 2110.111705 J 3 BTU → 3165.167558 J 4 BTU → 4220.22341 J 5 BTU → 5275.279263 J 6 BTU → 6330.335116 J 8 BTU → 8440.446821 J 10 BTU → 10550.558526 J 12 BTU → 12660.670231 J 15 BTU → 15825.837789 J 20 BTU → 21101.117052 J 25 BTU → 26376.396316 J
FAQ for BTU → J
How much is 1 BTU in joule?

1055.055853 joule (1 BTU = 1055.055853 joule).

How many kJ in 1 MJ?

Exactly 1000 kJ. Larger or mixed conversions still follow the fixed chain used by the calculator.

When is MJ more practical than kJ?

For larger totals-process energy, some statistical tables. Food labels usually stay in kJ or kcal.

Manual formula?

J = BTU × 1055.055853 (1 BTU = 1055.055853 J)

Reverse factor?

1 joule ≈ 0.000948 BTU.

How the British thermal unit to Joule converter works

This hub describes the pair, not a single number.

NiftyRecipe shows the factor and selected amount pages.