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Specific Properties

BTU/lbtoJ/kg

Convert British thermal units per pound (BTU/lb) to joules per kilogram (J/kg).

Factor1 BTU/lb = 2326 J/kg

Converter

BTU/lb

Accepts numbers or expressions, e.g. 150 + 14.7

Result
2326J/kg

Rendered to 6 significant figures.

Formula

Formula
J/kg = BTU/lb × 2326

Multiply any value in British thermal units per pound by 2326 to obtain the value in joules per kilogram.

Worked example

Convert 1 BTU/lb to J/kg.

  1. 01Start with 1 BTU/lb.
  2. 02Multiply by the conversion factor: 1 × 2326 = 2326 J/kg.
Result1 BTU/lb = 2326 J/kg

Conversion table

BTU/lbJ/kg
12326
24652
511630
1023260
2046520
501.1630e+5
1002.3260e+5
2004.6520e+5
5001.1630e+6
10002.3260e+6

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from BTU/lb to J/kg?
1 BTU/lb equals 2326 J/kg. To convert, multiply the value in British thermal units per pound by 2326.
How do I convert 1 BTU/lb to J/kg?
1 BTU/lb = 2326 J/kg. For any value, multiply by 2326.
How do I convert J/kg back to BTU/lb?
Divide by the same factor — or equivalently, multiply by 0.0004299226. So 1 J/kg = 0.000429923 BTU/lb.
When would I need to convert British thermal unit per pound to joule per kilogram?
Specific-energy conversions between BTU/lb and J/kg are needed in fuel-property datasheets (HHV/LHV), thermodynamic state calculations, battery energy-density comparisons, and combustion analysis. kJ/kg is the SI standard; BTU/lb is common in US fuel specifications.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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