How many CFM is 1 cubic meter per hour?

1 cubic meter per hour (m³/h) equals approximately 0.5886 CFM. The precise factor is 0.5885777827 CFM. For quick mental math, multiply m³/h by 0.5886 to get CFM.

How do I convert m³/h to CFM manually?

Multiply the m³/h value by 0.5885777827. The factor comes from converting hours to minutes (÷60) and cubic meters to cubic feet (1 m³ = 35.3146667 ft³). So 1 m³/h ÷ 60 min × 35.3146667 ft³/m³ = 0.58857778 CFM.

What is CMH and how does it relate to m³/h?

CMH stands for Cubic Meters per Hour — it is the same unit as m³/h. HVAC engineers and fan manufacturers use both abbreviations interchangeably. This converter handles both; just enter the numeric value.

Why do US HVAC specs use CFM while metric specs use m³/h?

CFM (cubic feet per minute) is the traditional unit under US and Canadian HVAC standards (ASHRAE, SMACNA, AMCA). Countries using SI units specify airflow in m³/h or L/s. Equipment shipped globally often lists both, but design calculations stay in the local standard.

How do I convert CFM back to m³/h?

Divide the CFM value by 0.5885777827, or equivalently multiply by 1.699010796. The reverse converter on this page does this automatically.

What is a typical HVAC airflow in m³/h and CFM?

A residential room might need 150–300 m³/h (88–176 CFM) of supply air. A small commercial AHU might handle 2,000–10,000 m³/h (1,177–5,886 CFM). Large industrial ventilation systems can exceed 100,000 m³/h (58,858 CFM).

m3/h to CFM Converter

Name: m3/h to CFM Converter
Availability: InStock
Author: Nham Vu

Enter a flow rate in cubic meters per hour (m³/h or CMH) to get the equivalent cubic feet per minute (CFM) instantly, with reverse conversion and a reference table.

Flow Rate Converter

Cubic meters per hour (m³/h)

= — cubic feet per minute (CFM)

Cubic feet per minute (CFM) — reverse

= — cubic meters per hour (m³/h)

1 m³/h = 0.5885777827 CFM | 1 CFM = 1.699010796 m³/h

Common conversions

m³/h	CFM	Typical use

Summary

Enter a flow rate in cubic meters per hour (m³/h or CMH) to get the equivalent cubic feet per minute (CFM) instantly, with reverse conversion and a reference table.

How it works

Enter a flow rate value in cubic meters per hour (m³/h) in the top input field.
The CFM result appears instantly using the factor 1 m³/h = 0.5885777827 CFM.
Use the reverse field to convert CFM back to m³/h.
Click "Copy" next to any result to copy it to your clipboard.
Click any row in the reference table to load that value into the converter.

Use cases

Convert HVAC air handler ratings between metric (m³/h) and US (CFM) specifications.
Select the right fan or blower when manufacturer datasheets use different unit systems.
Verify industrial ventilation or dust-collection system flow rates for cross-border projects.
Compare air handling unit (AHU) capacity across metric and US equipment catalogs.
Size exhaust hoods or cleanroom supply air flows from metric design standards to US installation specs.
Convert compressed air flow data for pneumatic systems between SI and imperial units.
Check ASHRAE ventilation requirements stated in CFM against metric building code values.
Match cooling tower or chiller airflow specs when sourcing equipment internationally.

Frequently Asked Questions

Last updated: 2026-07-23 · Reviewed by Nham Vu