Convert Kilojoule per kilogram kelvin to International table BTU per pound per degree Fahrenheit
Convert Kilojoule per kilogram kelvin (kJ/(kg·K)) to International table BTU per pound per degree Fahrenheit (BTU(IT)/(lb·°F)) instantly and accurately.
Conversion Formula
BTU(IT)/(lb·°F) = kJ/(kg·K) × 0.2388458966
About Kilojoule per kilogram kelvin
The kilojoule per kilogram kelvin (kJ/(kg·K)) equals exactly 1000 J/(kg·K). The most common unit in engineering thermodynamics textbooks and technical data sheets: water ≈4.182, steam ≈2.08, dry air ≈1.005 kJ/(kg·K). Found throughout ASHRAE, ISO, and EN standards for heat exchanger and HVAC design. 1 kJ/(kg·K) = 1000 J/(kg·K) = 1 kJ/(kg·°C).
About International table BTU per pound per degree Fahrenheit
The international table BTU per pound per degree Fahrenheit (BTU(IT)/(lb·°F)) equals (1055.05585262 × 9)/(0.45359237 × 5) J/(kg·K) = 4186.8 J/(kg·K). The standard US unit for specific heat capacity in ASHRAE, ASTM, and mechanical engineering references. Water: 1.000 BTU(IT)/(lb·°F); steel: ≈0.108; air: ≈0.240. 1 BTU(IT)/(lb·°F) = 4186.8 J/(kg·K).
Quick Reference Table
| Kilojoule per kilogram kelvin (kJ/(kg·K)) | International table BTU per pound per degree Fahrenheit (BTU(IT)/(lb·°F)) |
|---|---|
| 1 kJ/(kg·K) | 0.238846 BTU(IT)/(lb·°F) |
| 2 kJ/(kg·K) | 0.477692 BTU(IT)/(lb·°F) |
| 5 kJ/(kg·K) | 1.19423 BTU(IT)/(lb·°F) |
| 10 kJ/(kg·K) | 2.38846 BTU(IT)/(lb·°F) |
| 25 kJ/(kg·K) | 5.97115 BTU(IT)/(lb·°F) |
| 50 kJ/(kg·K) | 11.9423 BTU(IT)/(lb·°F) |
| 100 kJ/(kg·K) | 23.8846 BTU(IT)/(lb·°F) |