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Specific Heat Capacity

kJ/(kg·K)tocal/(kg·°C)

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

Factor1 kJ/(kg·K) = 239.0057 cal/(kg·°C)

Converter

kJ/(kg·K)

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

Result
1000cal/(kg·°C)

Rendered to 6 significant figures.

Formula

Formula
cal/(kg·°C) = kJ/(kg·K) × 239.0057

Multiply any value in kilojoules per kilogram-kelvin by 239.0057 to obtain the value in calories per kilogram-Celsius.

Worked example

Convert 4.184 kJ/(kg·K) to cal/(kg·°C).

  1. 01Start with 4.184 kJ/(kg·K).
  2. 02Multiply by the conversion factor: 4.184 × 239.0057 = 1000 cal/(kg·°C).
Result4.184 kJ/(kg·K) = 1000 cal/(kg·°C)

Conversion table

kJ/(kg·K)cal/(kg·°C)
1239.01
2478.01
51195
102390.1
204780.1
5011950
10023901
20047801
5001.1950e+5
10002.3901e+5

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kJ/(kg·K) to cal/(kg·°C)?
1 kJ/(kg·K) equals 239.0057 cal/(kg·°C). To convert, multiply the value in kilojoules per kilogram-kelvin by 239.0057.
How do I convert 1 kJ/(kg·K) to cal/(kg·°C)?
1 kJ/(kg·K) = 239.006 cal/(kg·°C). For any value, multiply by 239.0057.
How do I convert cal/(kg·°C) back to kJ/(kg·K)?
Divide by the same factor — or equivalently, multiply by 0.004184. So 1 cal/(kg·°C) = 0.004184 kJ/(kg·K).
When would I need to convert kilojoule per kilogram-kelvin to calorie per kilogram-Celsius?
Specific-heat-capacity conversions between kJ/(kg·K) and cal/(kg·°C) 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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