Specific Heat Capacity / Btu IT/(lb·°F) → J/(kg·K)
Convert Btu IT per pound Fahrenheit degree to Joules per kilogram kelvin
Convert heat capacity per unit mass and temperature interval. Convert Btu IT per pound Fahrenheit degree (Btu IT/(lb·°F)) to Joules per kilogram kelvin (J/(kg·K)). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Joules per kilogram kelvin to Btu IT per pound Fahrenheit degree →
How to convert Btu IT per pound Fahrenheit degree to joules per kilogram kelvin
Use the same thermodynamic convention before comparing values: constant-pressure and constant-volume heat capacities can differ. Temperature factors here are intervals, without offsets.
Use x for the value in Btu IT/(lb·°F), b for the intermediate value in J/(kg·K), and y for the result in J/(kg·K).
J/(kg·K) = Btu IT/(lb·°F) × 4186.799999999999
Worked examples
10 Btu IT/(lb·°F) ≈ 41868 J/(kg·K)
Step 1: (10 × 4186.8) ≈ 41868 J/(kg·K).
Step 2: 41868 ÷ 1 ≈ 41868 J/(kg·K).20 Btu IT/(lb·°F) ≈ 83736 J/(kg·K)
Step 1: (20 × 4186.8) ≈ 83736 J/(kg·K).
Step 2: 83736 ÷ 1 ≈ 83736 J/(kg·K).
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Btu IT per pound Fahrenheit degree
Btu IT per pound Fahrenheit degree (Btu IT/(lb·°F)) measures specific heat capacity under the conventions above. The base value in J/(kg·K) is (x × 4186.8), where x is the numerical value in Btu IT/(lb·°F). Factors shown here are rounded for display; calculations use the stored factor.
About Joules per kilogram kelvin
Joules per kilogram kelvin (J/(kg·K)) measures specific heat capacity under the conventions above. The base value in J/(kg·K) is (x × 1), where x is the numerical value in J/(kg·K). Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Btu IT per pound Fahrenheit degree to joules per kilogram kelvin reference table
| Btu IT per pound Fahrenheit degree (Btu IT/(lb·°F)) | Joules per kilogram kelvin (J/(kg·K)) |
|---|---|
| 1 | 4186.8 |
| 5 | 20934 |
| 10 | 41868 |
| 25 | 104670 |
| 50 | 209340 |
| 100 | 418680 |
| 1000 | 4186800 |
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