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Physics

Layer Thermal Resistance Calculator

Find conduction resistance of a flat homogeneous layer.

SI units shown beside each fieldIdeal model explained below
Physics lab
Physics lab

Use the units beside each input and review the model assumptions.

See the method

Define your system

Runs on your device

Your calculated quantity

Your result

Let’s calculate.

Use the Calculate button to see your result.

Review the method below for assumptions and conventions.

How to use this tool

  1. Enter thickness, conductivity, area.
  2. Select Calculate to view the result.
  3. Check the method and assumptions below before using the result.

The method, explained

Thermal resistance = thickness/(conductivity × area). Area-specific resistance = thickness/conductivity.

A WORKED EXAMPLE

Using thickness = 0.1 m, conductivity = 0.04 W/(m·K), area = 10 m², the result is 0.25 K/W. Change these example inputs to match your task; use the method above to check each step.

Understanding your result

One-dimensional steady conduction. Surface films, thermal bridges and moisture effects are excluded.

What to keep in mind

One-dimensional steady conduction. Surface films, thermal bridges and moisture effects are excluded. An idealized educational model using the stated SI units. Real systems may need additional forces, losses or experimental measurements. Not a safety or equipment specification.

Common questions

How do I use this layer thermal resistance calculator?

Find conduction resistance of a flat homogeneous layer. Enter thickness in m, conductivity in W/(m·K), area in m². The starting example is editable; use values for the same system or project.

Which assumptions affect this result?

One-dimensional steady conduction. Surface films, thermal bridges and moisture effects are excluded.

Methodology maintained by ClarityKit. How these tools are built and checked.