HVAC ENGINEERING TOOL

Airflow Converter

Convert HVAC volumetric airflow between CFM, m³/h, L/s and m³/s.

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Formula / Method

Flow(to) = Flow(from) × SI factor(from) ÷ SI factor(to)

Engineering Method & Assumptions

Volumetric flow only.
International foot definition is used.

Applicability: Conversion does not correct airflow for density, temperature, pressure, altitude, or standard/actual conditions.

WHEN TO USE THIS TOOL

Useful during airside & ventilation work.

Quick-check airflow, velocity, room-air-change or ventilation relationships during design reviews.
Compare alternate design conditions before moving into detailed equipment or duct selection.
Use as a transparent check alongside project criteria, applicable standards and manufacturer data.

Frequently asked questions

Are CFM and CMH volumetric units?

Yes. CFM and m³/h describe volume per unit time.

Does conversion correct for air density?

No. This is a dimensional volumetric-flow conversion.

Is precision retained?

Yes. The engine retains precision and rounds only the display.