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Latent Heat Converter

Convert latent heat units including J/kg, kJ/kg, cal/g, kcal/kg, BTU/lb, and MJ/kg instantly - phase-change energy per mass, no signup. Ideal for HVAC engineers, steam-table work, and refrigeration calculations.

0.429923
1 kJ/kg = 0.429923 BTU/lb
Formula: 1 kJ/kg = 1000 J/kg; 1 cal/g = 4184 J/kg; 1 BTU/lb ≈ 2326 J/kg.

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About this latent heat converter

Convert latent heat units for melting, freezing, boiling, condensation, refrigeration, steam tables, and phase-change thermal storage.

Latent heat is energy per unit mass for a phase change, so its units do not include a temperature difference.

Units covered

Latent heat units

J/kg, kJ/kg, cal/g, kcal/kg, BTU/lb, kJ/g, and MJ/kg.

Phase-change work

Useful for vaporization, fusion, condensation, freezing, and refrigeration cycle calculations.

HVAC and steam

Converts between SI and BTU/lb values commonly found in HVAC and steam references.

How to use it

  • Enter the latent heat value.
  • Choose the unit used by your source table.
  • Convert to the unit required for your mass, heat load, or HVAC calculation.

Frequently Asked Questions