Linear Area Expansion - Thermal Expansion

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Linear Area Expansion by means of Thermal Expansion

Notation and Units

Metric and Imperial Units

The above formulas may be used with both imperial and metric units. As with all calculations care must be taken to keep consistent units throughout with examples of units which should be adopted listed below:


  • A = area, in4 or mm4
  • AF = final area, in4 or mm4
  • A = change in area, in4 or mm4
  • T = change in temperature, ᵒK or ᵒC
  • α = coefficient of thermal expansion, ᵒK-1 or ᵒC-1

Additional Resources

  1. BYJU’S. 2019. Thermal expansion formula. Retrieved from
  2. LD Didacting GmbH. Measuring the linear expansion of solids as function of temperature. Germany. Published in "LD Physics Leaflets".
  3. R.Hogan. How to calculate Thermal Epansion. US. 2019. Publised in "".