BTU per Pound (BTU/lb)
BTU per pound is the US unit of specific enthalpy and heating value, exactly 2.326 kJ/kg: water’s latent heat of vaporisation is 970 BTU/lb and diesel about 19,000 BTU/lb.
Symbol: BTU/lb
Quantity: specific energy: enthalpy, latent heat and heating value per mass
SI relation: 1 BTU/lb = 2326 J/kg (exact)
Derivation: 1 BTU_IT/lb = 1055.05585262 J ÷ 0.45359237 kg = 2326 J/kg exactly.
Exact: yes, by definition
Typical uses
- US steam tables
- Fuel heating values in US units
- Refrigeration and HVAC
Convert BTU per pound to other units
| Conversion | 1 BTU/lb equals | Reverse |
|---|---|---|
| BTU per pound to kilojoule per kilogram | 2.326 kJ/kg | kilojoule per kilogram to BTU per pound |
| BTU per pound to megajoule per kilogram | 0.002326 MJ/kg | megajoule per kilogram to BTU per pound |
| BTU per pound to kilocalorie per kilogram | 0.5555555556 kcal/kg | kilocalorie per kilogram to BTU per pound |
| BTU per pound to joule per kilogram | 2326 J/kg | joule per kilogram to BTU per pound |
| BTU per pound to calorie per gram | 0.5555555556 cal/g | calorie per gram to BTU per pound |
| BTU per pound to kilowatt-hour per kilogram | 0.0006461111111 kWh/kg | kilowatt-hour per kilogram to BTU per pound |
| BTU per pound to joule per gram | 2.326 J/g | joule per gram to BTU per pound |
Open the Specific Enthalpy Converter (kJ/kg, BTU/lb, kcal/kg) to convert any value between all units.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "British thermal unit_IT per pound".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). BTU per Pound (BTU/lb). Retrieved October 29, 2026, from https://scientificconverters.com/units/btu-per-pound/
IEEE
Scientific Converters, "BTU per Pound (BTU/lb)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/units/btu-per-pound/