Convert BTU (international table) (BTU (IT)) to joules (J).
Energy converter
Instant conversion
Edit either value. Decimals and scientific notation supported.
1
BTU (IT)
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JouleJ
KilojoulekJ
MegajouleMJ
Watt-hourWh
Kilowatt-hourkWh
Thermochemical caloriecal
Kilocalorie (food Calorie)kcal
BTU (international table)BTU (IT)
ElectronvolteV
No units found. Try a name or symbol.
1055.055853
J
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JouleJ
KilojoulekJ
MegajouleMJ
Watt-hourWh
Kilowatt-hourkWh
Thermochemical caloriecal
Kilocalorie (food Calorie)kcal
BTU (international table)BTU (IT)
ElectronvolteV
No units found. Try a name or symbol.
CONVERSION
1 BTU (IT) ≈ 1055.055853 J
6 significant figures
10 significant figures
15 significant figures
Precision changes displayed rounding, not calculation accuracy.
FORMULAJ = BTU (IT) × 1055.05585262
FORMULA & EXAMPLES
How to convert BTU (international table) to joules
J = BTU (IT) × 1055.05585262
Multiply the BTU (IT) reading by 1055.05585262.
Worked examples
1 BTU (IT) ≈ 1055.055853 J
1 × 1055.05585262 ≈ 1055.055853
1000 BTU (IT) ≈ 1055055.853 J
1000 × 1055.05585262 ≈ 1055055.853
Frequently asked questions
Which BTU definition is used?
The tool uses the international table BTU, equal to 1055.05585262 J. A value defined using another BTU convention needs that convention’s factor.
BTU (international table) to joules table
Fixed reference · BTU (international table) to Joule
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
BTU (international table) (BTU (IT))
Joule (J)
0
0
0.1
105.5055853
0.5
527.5279263
1
1055.055853
2
2110.111705
5
5275.279263
10
10550.55853
25
26376.39632
50
52752.79263
100
105505.5853
1000
1055055.853
Table results use 10 significant figures; decimal formula coefficients use up to 15. Calculations use the unit definitions before rounding. Extra digits do not improve measurement accuracy.