NiftyRecipe Online energy conversion
kWh/BTU 3412.141633 BTU/cal 252.164401 MJ/kJ 1000 kWh/kcal 860.42065 BTU/kWh 0.000293 MJ/kcal 239.005736
BTU / J

1800 BTUs in joule

1899100.534716 joule

1 BTU = 1055.055853 J · factor

Reverse: 1 joule ≈ 0.000948 BTU. Use the reference table for common values.

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

Common values

joule to BTU 1 BTU in joule 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

Same amount, other units

1800 BTUs → kcal 1800 BTUs → cal 1800 BTUs → kJ 1800 BTUs → kWh 1800 BTUs → 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

All amounts for this pair

FAQ for BTU → J
1800 BTUs in joule

NiftyRecipe converts 1800 BTUs to 1899100.534716 joule with a fixed SI-linked factor.

Kilojoules and megajoules describe energy on a scientific scale. The ratio applied here is 1 BTU = 1055.055853 joule, so this amount is 1899100.534716 joule. Reverse check: 1 joule ≈ 0.000948 BTU. 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.