Figure

HVAC

Airflow conversions

Convert airflow between CFM, liters per second, and cubic meters per hour.

CFM, liters per second and cubic meters per hour are units of volume flow rate. Converting them expresses the same airflow in another unit; it does not change the duct area or air speed.

Convert airflow

Select Airflow, label the reading, then choose its new unit.

Start a new calculation

  1. Press Clear entry, then Clear entry.

Select Airflow

  1. Press Second, then Select airflow units.

Enter airflow

  1. Airflow

    Press 1000, then cubic feet per minute.

Convert to L/s

  1. Press liters per second.
  1. Example result471.9474 L/s

Keep in mind

CFM, L/s and m³/h are all on the main row. Tap another unit to convert. Tap the current unit again to remove units and keep its number.

Keep the guide beside your calculation.

These examples are built into Figure. Open Help while you calculate, then return to the same guide and reading position.

See Help in Figure →