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Specific Properties

BTU/lbtokWh/kg

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

Factor1 BTU/lb = 0.0006461112 kWh/kg

Converter

BTU/lb

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

Result
0.646111kWh/kg

Rendered to 6 significant figures.

Formula

Formula
kWh/kg = BTU/lb × 0.0006461112

Multiply any value in British thermal units per pound by 0.0006461112 to obtain the value in kilowatt-hours per kilogram.

Worked example

Convert 1000 BTU/lb to kWh/kg.

  1. 01Start with 1000 BTU/lb.
  2. 02Multiply by the conversion factor: 1000 × 0.0006461112 = 0.646111 kWh/kg.
Result1000 BTU/lb = 0.646111 kWh/kg

Conversion table

BTU/lbkWh/kg
10.00064611
20.0012922
50.0032306
100.0064611
200.012922
500.032306
1000.064611
2000.12922
5000.32306
10000.64611

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from BTU/lb to kWh/kg?
1 BTU/lb equals 0.0006461112 kWh/kg. To convert, multiply the value in British thermal units per pound by 0.0006461112.
How do I convert 1 BTU/lb to kWh/kg?
1 BTU/lb = 0.000646111 kWh/kg. For any value, multiply by 0.0006461112.
How do I convert kWh/kg back to BTU/lb?
Divide by the same factor — or equivalently, multiply by 1547.721. So 1 kWh/kg = 1547.72 BTU/lb.
When would I need to convert British thermal unit per pound to kilowatt-hour per kilogram?
Specific-energy conversions between BTU/lb and kWh/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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