Thermal Expansion Converter

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Heat • 6 units

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How to Use the Thermal Expansion Converter

Enter a value — type any number. Invalid text and symbols are blocked automatically.
Select From and To units — choose the units to convert between.
Read the animated result — the converted value, factor, and full reference table update instantly.
Use Swap (⇄) — reverse the conversion in one click.

Why Use This Thermal Expansion Converter

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Accurate Standards

Built on internationally recognised SI and standards-body conversion factors for dependable results.

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Instant & Animated

Results update live as you type, with a clear visual breakdown across every unit at once.

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100% Private

Everything runs in your browser — no account, no uploads, nothing leaves your device.

Common Thermal Expansion Converter Values

Quick reference — 1 per Kelvin (1/K) is equal to:

per Degree Celsius	1/°C	1
per Degree Fahrenheit	1/°F	0.555555556
ppm per Kelvin	ppm/K	1,000,000
ppm per °C	ppm/°C	1,000,000
µm/(m·K)	µm/(m·K)	1,000,000

Thermal Expansion Converter FAQ

What is the coefficient of thermal expansion? ▾

It expresses how much a material expands per degree of temperature change. Aluminium is about 23 ppm/K; steel about 12 ppm/K; glass about 9 ppm/K.

Why is 1/°F larger than 1/K? ▾

A Fahrenheit degree is smaller than a kelvin (1 °F = 5/9 K), so the same expansion measured per °F gives a number 1.8× larger when expressed per kelvin.