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Calculation Machine

CFM to m³/h Calculator

Convert cubic feet per minute to cubic metres per hour.

Reviewed by the Calculation Machine team · How we check our maths

Your values

ⓘ Live results

Results
Airflow
679.6 m³/h
In m³/min
11.327
In L/s
188.8
In m³/s
0.1888

Working

  1. 1400 CFM x 1.69901 = 679.6 m³/h

Quick answer

One CFM equals 1.69901 cubic metres per hour.

The formula

m³/h = CFM x 1.69901

Worked example

Worked example

Using the values the calculator loads with.

Inputs

  • Airflow400 CFM

Result

  • Airflow679.6 m³/h
  • In m³/min11.327
  • In L/s188.8
  • In m³/s0.1888

How to use the CFM to m³/h Calculator

  1. 1Enter the airflow rating in CFM from the fan or spec sheet.
  2. 2Read the equivalent in m³/h, the unit used on most European fans.
  3. 3Use L/s when comparing against ventilation codes written in metric.

Frequently asked questions

Why do European fans use m³/h?

Metric ventilation standards rate airflow per hour, so m³/h keeps the numbers convenient for whole-room air changes.

Is CFM the same as SCFM?

No — SCFM is corrected to standard temperature and pressure. At sea level and room temperature they are close enough for ventilation work.

About this calculator