Convert Thermochemical BTU per pound per degree Fahrenheit to Celsius Heat Unit per pound per degree Celsius
Convert Thermochemical BTU per pound per degree Fahrenheit (BTU(th)/(lb·°F)) to Celsius Heat Unit per pound per degree Celsius (CHU/(lb·°C)) instantly and accurately.
Conversion Formula
CHU/(lb·°C) = BTU(th)/(lb·°F) × 0.9993312315
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 Celsius Heat Unit per pound per degree Celsius
The Celsius heat unit per pound per degree Celsius (CHU/(lb·°C)) equals exactly (1055.05585262 × 9)/(0.45359237 × 5) J/(kg·K) = 4186.8 J/(kg·K). The CHU is 9/5 BTU(IT); combined with a 1 °C instead of 1 °F interval the factor is the same as BTU(IT)/(lb·°F). Used in older UK and Canadian engineering practice. Water: 1 CHU/(lb·°C). 1 CHU/(lb·°C) = 4186.8 J/(kg·K).
Quick Reference Table
| Thermochemical BTU per pound per degree Fahrenheit (BTU(th)/(lb·°F)) | Celsius Heat Unit per pound per degree Celsius (CHU/(lb·°C)) |
|---|---|
| 1 BTU(th)/(lb·°F) | 0.999331 CHU/(lb·°C) |
| 2 BTU(th)/(lb·°F) | 1.99866 CHU/(lb·°C) |
| 5 BTU(th)/(lb·°F) | 4.99666 CHU/(lb·°C) |
| 10 BTU(th)/(lb·°F) | 9.99331 CHU/(lb·°C) |
| 25 BTU(th)/(lb·°F) | 24.9833 CHU/(lb·°C) |
| 50 BTU(th)/(lb·°F) | 49.9666 CHU/(lb·°C) |
| 100 BTU(th)/(lb·°F) | 99.9331 CHU/(lb·°C) |