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Specific Heat Capacity

cal/(kg·°C)tokJ/(kg·K)

Convert calories per kilogram-Celsius (cal/(kg·°C)) to kilojoules per kilogram-kelvin (kJ/(kg·K)).

Factor1 cal/(kg·°C) = 0.004184 kJ/(kg·K)

Converter

cal/(kg·°C)

Accepts numbers or expressions, e.g. 150 + 14.7

Result
0.004184kJ/(kg·K)

Rendered to 6 significant figures.

Formula

Formula
kJ/(kg·K) = cal/(kg·°C) × 0.004184

Multiply any value in calories per kilogram-Celsius by 0.004184 to obtain the value in kilojoules per kilogram-kelvin.

Worked example

Convert 1 cal/(kg·°C) to kJ/(kg·K).

  1. 01Start with 1 cal/(kg·°C).
  2. 02Multiply by the conversion factor: 1 × 0.004184 = 0.004184 kJ/(kg·K).
Result1 cal/(kg·°C) = 0.004184 kJ/(kg·K)

Conversion table

cal/(kg·°C)kJ/(kg·K)
10.004184
20.008368
50.02092
100.04184
200.08368
500.2092
1000.4184
2000.8368
5002.092
10004.184

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from cal/(kg·°C) to kJ/(kg·K)?
1 cal/(kg·°C) equals 0.004184 kJ/(kg·K). To convert, multiply the value in calories per kilogram-Celsius by 0.004184.
How do I convert 1 cal/(kg·°C) to kJ/(kg·K)?
1 cal/(kg·°C) = 0.004184 kJ/(kg·K). For any value, multiply by 0.004184.
How do I convert kJ/(kg·K) back to cal/(kg·°C)?
Divide by the same factor — or equivalently, multiply by 239.0057. So 1 kJ/(kg·K) = 239.006 cal/(kg·°C).
When would I need to convert calorie per kilogram-Celsius to kilojoule per kilogram-kelvin?
Specific-heat-capacity conversions between cal/(kg·°C) and kJ/(kg·K) are routine in thermal engineering, heat-balance work, HVAC design, metallurgy, chemical engineering and materials science. J/(kg·K) and kJ/(kg·K) are the SI standards; cal/(g·°C) is the classic thermochemical convention; BTU/(lb·°F) dominates US process and ASHRAE datasheets. All conversions use fixed multiplicative factors — this category does NOT look up the Cp value of any specific material (water, air, steam, etc.), does NOT perform heat-duty calculations (Q = m·Cp·ΔT), and does NOT convert lumped thermal capacity (J/K) to specific heat capacity (J/(kg·K)) without mass. Temperature units in the denominator represent temperature intervals, not absolute temperatures — a 1 °C interval equals a 1 K interval.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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