Latent Heat Calculator

Enter the mass of an object and the specific latent heat of that object to calculate the latent heat in Joules.

Latent Heat Formula

The following equation can be used to calculate the latent heat of any object or material.

Q = m * L

  • Where Q is the latent heat (Joules)
  • m is the mass of the object (kg)
  • L is the specific latent heat.

Just as with specific heat, latent heat can be calculated through the mass and a constant that measure the objects ability to absorb heat. In the cases of latent heat, this is only the objects ability to absorb heat during phase transitions.

Latent Heat Definition

In other words, when i substance such as water is boiled, the temperature of the water does not change when it’s undergoing the phase change to a gas. Only when the water is in a gaseous state does the temperature start to increase. The energy that is dumped into the water during this time is considered to be the latent heat.

How to calculate latent heat?

How to calculate latent heat?

  1. First, determine the mass of the substance.

    Measure or calculate the total mass of the substance or object.

  2. Next, determine the specific latent heat.

    Measure or lookup the specific latent heat of the material.

  3. Finally, calculate the latent heat.

    Using the formula above calculate the latent heat.

FAQ

What is latent heat?

Latent heat is the total energy required to change the phase of a substance. For example, changing water from a liquid to a gas via boiling.

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