Joules to BTU Calculator
Convert energy measurements between Joules and British Thermal Units (BTU) with our comprehensive calculator. Quick, accurate conversions for science, engineering, and everyday use.
Step 1: Input Energy Value
About Joules and BTU
Joules (J) are the SI unit of energy, while British Thermal Units (BTU) are commonly used in heating and cooling systems. 1 BTU equals approximately 1055 Joules.
Step 2: Conversion Options
About Conversion Factors
The standard conversion factor is 1 BTU = 1055.06 Joules. The thermochemical conversion factor (1 BTU = 1054.35 J) is used in some scientific contexts. Custom factors can be set for specialized applications.
Conversion Results
Converted Energy Value
Energy Unit Comparison
| Energy Unit | Symbol | Equivalent in Joules | Equivalent in BTU |
|---|
Conversion Formula
Joules to BTU Formula
BTU = Joules ÷ Conversion Factor
Where the standard conversion factor is 1055.06 Joules per BTU.
BTU to Joules Formula
Joules = BTU × Conversion Factor
Where the standard conversion factor is 1055.06 Joules per BTU.
Example Calculations
Example 1: 5000 Joules to BTU
5000 J ÷ 1055.06 J/BTU = 4.74 BTU
Example 2: 15 BTU to Joules
15 BTU × 1055.06 J/BTU = 15,825.9 J
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