Room Volume Calculator for HVAC (m³ and ft³)

Room Volume Calculator for HVAC (m³ and ft³)

The Room Volume Calculator helps HVAC engineers, designers, and students calculate the volume of a room in cubic meters (m³) and cubic feet (ft³). Room volume is a key input for ventilation, ACH, cooling load, and heating load calculations.


Room Volume Calculator








Room Volume Formula

Room Volume (m³) = Length × Width × Height

This formula applies to rectangular rooms and is commonly used in HVAC design and ventilation calculations.


Example Room Volume Calculation

  • Length = 6 m
  • Width = 5 m
  • Height = 3 m
  • Room Volume = 90 m³

Where Room Volume Is Used in HVAC

  • Air Changes per Hour (ACH) calculation
  • Ventilation airflow estimation
  • Cooling load calculation
  • Heating load calculation

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Disclaimer: This calculator is provided for educational and preliminary HVAC design purposes only. Final system design should follow applicable standards and project requirements.