Convert Thermochemical BTU per pound per degree Fahrenheit to Joule per kilogram degree Celsius
Convert Thermochemical BTU per pound per degree Fahrenheit (BTU(th)/(lb·°F)) to Joule per kilogram degree Celsius (J/(kg·°C)) instantly and accurately.
Conversion Formula
J/(kg·°C) = BTU(th)/(lb·°F) × 4184
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 Joule per kilogram degree Celsius
The joule per kilogram degree Celsius (J/(kg·°C)) equals exactly 1 J/(kg·K) since temperature intervals 1 °C = 1 K. Widely used in building physics, HVAC, and thermodynamics textbooks where Celsius is the standard temperature scale. Material property tables in ISO and EN standards frequently list specific heat in J/(kg·°C). 1 J/(kg·°C) = 1 J/(kg·K).
Quick Reference Table
| Thermochemical BTU per pound per degree Fahrenheit (BTU(th)/(lb·°F)) | Joule per kilogram degree Celsius (J/(kg·°C)) |
|---|---|
| 1 BTU(th)/(lb·°F) | 4184 J/(kg·°C) |
| 2 BTU(th)/(lb·°F) | 8368 J/(kg·°C) |
| 5 BTU(th)/(lb·°F) | 20920 J/(kg·°C) |
| 10 BTU(th)/(lb·°F) | 41840 J/(kg·°C) |
| 25 BTU(th)/(lb·°F) | 104600 J/(kg·°C) |
| 50 BTU(th)/(lb·°F) | 209200 J/(kg·°C) |
| 100 BTU(th)/(lb·°F) | 418400 J/(kg·°C) |