NiftyRecipe Online energy conversion
MJ/kJ 1000 cal/MJ 0.000004 kcal/MJ 0.004184 kWh/BTU 3412.141633 MJ/cal 239005.736138 kJ/kcal 0.239006
J / BTU

4 joules in BTU

0.003791 BTU

1 J = 0.000948 BTU · factor

Reverse: 1 BTU ≈ 1055.055853 joule. Use the reference table for common values.

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

Common values

BTU to joule 1 joule in BTU 2 joules in BTU 3 joules in BTU 5 joules in BTU 6 joules in BTU 8 joules in BTU 10 joules in BTU 12 joules in BTU 15 joules in BTU 20 joules in BTU

Related converters

J → kcal J → kJ
Formula: joule to BTU

BTU = J × 0.000948 (1 J = 0.000948 BTU)

Reference values: joule → BTU
J BTU
1 J 0.000948 BTU
100 J 0.094782 BTU
200 J 0.189563 BTU
500 J 0.473909 BTU
1000 J 0.947817 BTU
2000 J 1.895634 BTU

All amounts for this pair

FAQ for J → BTU
4 joules in BTU

NiftyRecipe converts 4 joules to 0.003791 BTU with a fixed SI-linked factor.

Kilojoules and megajoules describe energy on a scientific scale. The ratio applied here is 1 joule = 0.000948 BTU, so this amount is 0.003791 BTU. Reverse check: 1 BTU ≈ 1055.055853 joule. That helps when a lab notebook or spreadsheet only lists one column.

Change the value in the calculator for homework, datasheets or rough process estimates. The wording stays technical on purpose so these pages read differently from food-label articles on the same site.