Convert btu (it) per pound fahrenheit to kilojoule per kilogram kelvin instantly. Type in either field — results update live.
Selected BTU (IT)/(lb·°F) values converted to kJ/(kg·K) using the exact factor from this tool.
| BTU (IT)/(lb·°F) | kJ/(kg·K) |
|---|---|
| 0.01 | 0.041868 |
| 0.1 | 0.41868 |
| 1 | 4.1868 |
| 2 | 8.3736 |
| 3 | 12.5604 |
| 5 | 20.934 |
| 10 | 41.868 |
| 20 | 83.736 |
| 50 | 209.34 |
| 100 | 418.68 |
| 1,000 | 4,186.8 |
Exact conversion factors in both directions, plus a worked example.
1 BTU (IT)/(lb·°F) = 4.1868 kJ/(kg·K)
1 kJ/(kg·K) = 0.2388458966 BTU (IT)/(lb·°F)
To convert btu (it) per pound fahrenheit to kilojoule per kilogram kelvin, multiply by 4.1868.
To convert kilojoule per kilogram kelvin to btu (it) per pound fahrenheit, multiply by 0.2388458966.
Example: convert 10 BTU (IT)/(lb·°F) to kJ/(kg·K)
10 × 4.1868 = 41.868 kJ/(kg·K)
Short background on the units used in this conversion.
A BTU (IT) per pound Fahrenheit equals 4,186.8 J/(kg·K) — the imperial specific heat unit common in US HVAC and materials handbooks.
BTU (IT) per pound Fahrenheit describe building materials, refrigerants, and process fluids in US engineering references.
A kilojoule per kilogram kelvin (kJ/(kg·K)) equals 1,000 J/(kg·K) — convenient for metals and high-capacity thermal storage media.
Kilojoules per kilogram kelvin rate phase-change materials, molten salts, and concentrated thermal buffers.
kJ/(kg·K) = BTU (IT)/(lb·°F) × 4.1868BTU (IT)/(lb·°F) = kJ/(kg·K) × 0.2388458966, using the same exact factors as this converter.Jump to any specific heat capacity conversion starting from btu (it) per pound fahrenheit — including the reverse direction and every other unit in our dataset.