Specific Heat Capacity of Water (Cp) vs Temperature

Cp of liquid water from 0 to 300°C. Polynomial fit, ideal for heat exchanger duty and energy balance calculations.

Specific Heat of Water vs Temperature

Property Data

Specific heat capacity of liquid water at 1 bar (IAPWS-95).
Cp (kJ/kg·°C)Temperature (°C)
4.21760
4.181620
4.178640
4.184860
4.196480
4.2159100
4.302150
4.451200
4.678250
5.141300

Key Insights

  • Minimum Cp at ~37°C (4.1783 kJ/kg·°C).
  • Cp increases +23% from 20°C to 300°C.
  • Use averaged Cp for large ΔT in Q = mCpΔT.

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