Latent Heat Calculator
Calculate energy for phase changes (melting, boiling, etc.) with Q = mL.
How to Use This Calculator
1
Enter Mass
Provide the mass of the substance in kilograms.
2
Enter Specific Latent Heat
Use the appropriate L value (e.g., ice fusion 334 kJ/kg).
3
Calculate Heat
Click Calculate to get energy in joules (J).
Formula
Q = m × L
Q in joules, m in kg, L in J/kg.
Example:
m = 0.5 kg, L = 334000 J/kg
Q = 0.5 × 334000 = 167000 J
About Latent Heat Calculator
Estimate the thermal energy required for a phase change without temperature change.
When to Use This Calculator
- Melting/freezing: Fusion processes.
- Boiling/condensation: Vaporization processes.
- HVAC/thermodynamics: Energy balances.
- Education: Quick phase-change energy checks.
Frequently Asked Questions
What is latent heat?
Energy absorbed or released during a phase change at constant temperature.
Which value of L should I use?
Use the specific latent heat for the substance and process (fusion, vaporization, etc.).
Does temperature change during the process?
In ideal phase changes, temperature remains constant while heat is added or removed.