Convert Thermochemical BTU per pound per degree Fahrenheit to Kilojoule per kilogram degree Celsius
Convert Thermochemical BTU per pound per degree Fahrenheit (BTU(th)/(lb·°F)) to Kilojoule per kilogram degree Celsius (kJ/(kg·°C)) instantly and accurately.
Conversion Formula
kJ/(kg·°C) = BTU(th)/(lb·°F) × 4.184
About Thermochemical BTU per pound per degree Fahrenheit
The thermochemical BTU per pound per degree Fahrenheit (BTU(th)/(lb·°F)) equals exactly 4184 J/(kg·K) (derived: 1 BTU(th) = 1054.350264 J; /lb/°F). Numerically identical to cal(th)/(g·°C) because both are defined via the thermochemical calorie. Used in older American thermodynamic tables. Water ≈1 BTU(th)/(lb·°F). 1 BTU(th)/(lb·°F) = 4184 J/(kg·K).
About Kilojoule per kilogram degree Celsius
The kilojoule per kilogram degree Celsius (kJ/(kg·°C)) equals exactly 1 kJ/(kg·K) = 1000 J/(kg·K) since 1 °C = 1 K. The preferred notation in European process and chemical engineering where Celsius dominates. Often used interchangeably with kJ/(kg·K) in material datasheets. Water: 4.182 kJ/(kg·°C). 1 kJ/(kg·°C) = 1 kJ/(kg·K) = 1000 J/(kg·K).
Quick Reference Table
| Thermochemical BTU per pound per degree Fahrenheit (BTU(th)/(lb·°F)) | Kilojoule per kilogram degree Celsius (kJ/(kg·°C)) |
|---|---|
| 1 BTU(th)/(lb·°F) | 4.184 kJ/(kg·°C) |
| 2 BTU(th)/(lb·°F) | 8.368 kJ/(kg·°C) |
| 5 BTU(th)/(lb·°F) | 20.92 kJ/(kg·°C) |
| 10 BTU(th)/(lb·°F) | 41.84 kJ/(kg·°C) |
| 25 BTU(th)/(lb·°F) | 104.6 kJ/(kg·°C) |
| 50 BTU(th)/(lb·°F) | 209.2 kJ/(kg·°C) |
| 100 BTU(th)/(lb·°F) | 418.4 kJ/(kg·°C) |