Convert International table BTU per pound per degree Fahrenheit to Thermochemical kilocalorie per kilogram per degree Celsius
Convert International table BTU per pound per degree Fahrenheit (BTU(IT)/(lb·°F)) to Thermochemical kilocalorie per kilogram per degree Celsius (kcal(th)/(kg·°C)) instantly and accurately.
Conversion Formula
kcal(th)/(kg·°C) = BTU(IT)/(lb·°F) × 1.000669216
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).
About Thermochemical kilocalorie per kilogram per degree Celsius
The thermochemical kilocalorie per kilogram per degree Celsius (kcal(th)/(kg·°C)) equals exactly 4184 J/(kg·K) (1 kcal(th) = 4184 J = 1000 cal(th)). Used in older continental European and Soviet-era engineering tables as the practical metric unit. Water ≈1 kcal(th)/(kg·°C); iron ≈0.107 kcal(th)/(kg·°C). 1 kcal(th)/(kg·°C) = 4184 J/(kg·K) = 1 cal(th)/(g·°C).
Quick Reference Table
| International table BTU per pound per degree Fahrenheit (BTU(IT)/(lb·°F)) | Thermochemical kilocalorie per kilogram per degree Celsius (kcal(th)/(kg·°C)) |
|---|---|
| 1 BTU(IT)/(lb·°F) | 1.00067 kcal(th)/(kg·°C) |
| 2 BTU(IT)/(lb·°F) | 2.00134 kcal(th)/(kg·°C) |
| 5 BTU(IT)/(lb·°F) | 5.00335 kcal(th)/(kg·°C) |
| 10 BTU(IT)/(lb·°F) | 10.0067 kcal(th)/(kg·°C) |
| 25 BTU(IT)/(lb·°F) | 25.0167 kcal(th)/(kg·°C) |
| 50 BTU(IT)/(lb·°F) | 50.0335 kcal(th)/(kg·°C) |
| 100 BTU(IT)/(lb·°F) | 100.067 kcal(th)/(kg·°C) |