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Specific Properties

Wh/kgtoBTU/lb

Convert watt-hours per kilogram (Wh/kg) to British thermal units per pound (BTU/lb).

Factor1 Wh/kg = 1.547721 BTU/lb

Converter

Wh/kg

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

Result
154.772BTU/lb

Rendered to 6 significant figures.

Formula

Formula
BTU/lb = Wh/kg × 1.547721

Multiply any value in watt-hours per kilogram by 1.547721 to obtain the value in British thermal units per pound.

Worked example

Convert 100 Wh/kg to BTU/lb.

  1. 01Start with 100 Wh/kg.
  2. 02Multiply by the conversion factor: 100 × 1.547721 = 154.772 BTU/lb.
Result100 Wh/kg = 154.772 BTU/lb

Conversion table

Wh/kgBTU/lb
11.5477
23.0954
57.7386
1015.477
2030.954
5077.386
100154.77
200309.54
500773.86
10001547.7

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from Wh/kg to BTU/lb?
1 Wh/kg equals 1.547721 BTU/lb. To convert, multiply the value in watt-hours per kilogram by 1.547721.
How do I convert 1 Wh/kg to BTU/lb?
1 Wh/kg = 1.54772 BTU/lb. For any value, multiply by 1.547721.
How do I convert BTU/lb back to Wh/kg?
Divide by the same factor — or equivalently, multiply by 0.6461112. So 1 BTU/lb = 0.646111 Wh/kg.
When would I need to convert watt-hour per kilogram to British thermal unit per pound?
Specific-energy conversions between Wh/kg and BTU/lb 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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