m³/hr to CFM Calculator
Convert flow rates from cubic meters per hour (m³/hr) to cubic feet per minute (CFM) instantly. Size ventilation systems, analyze HVAC airflow, and verify blower capacities with our verified conversion tool.
m3 hr to CFM Calculator
How to Use m3 hr to CFM Calculator
Converting volumetric flow rate values from cubic meters per hour to cubic feet per minute is simple using our responsive layout. Sizing air compressors, design of ventilation systems, and verifying blower specifications require precise flow rate conversions. Follow these steps to obtain verified airflow results:
- 11. Enter the flow value in cubic meters per hour. Input the value in m³/hr in the input field.
- 22. Click Calculate. Click the Calculate button to run the conversion.
- 33. Multiply the value by 0.5885777702. The tool uses the precise conversion factor of 0.5885777702.
- 44. View the airflow result in cubic feet per minute. The result is displayed instantly up to 6 decimal places.
- 55. Use the result for HVAC or ventilation applications. Apply the final CFM value for sizing ducts, air handling units, or exhaust blowers.
How to Calculate m3 hr to CFM
Converting flow rates between metric cubic meters per hour and imperial cubic feet per minute requires using precise volume and time ratios. These mathematical relations are derived from the physical definitions of meters, feet, and minutes. Follow this standard conversion formula:
Where:
- CFM = Flow rate in Cubic Feet per Minute (imperial unit)
- m³/hr = Flow rate in Cubic Meters per Hour (metric unit)
- 0.5885777702 = Constant conversion factor to adjust volume from cubic meters to cubic feet, and hours to minutes.
Practical Engineering Example
Convert an air handling system's flow rate of 150 m³/hr into cubic feet per minute:
Step 1: Identify the flow value to convert
Step 2: Set up the multiplication with the conversion factor
Step 3: Compute the product mathematically
Final answer: 150 m³/hr is equivalent to 88.287 CFM (rounded to three decimal places).
m3 hr to CFM Chart
This reference chart displays conversions from cubic meters per hour (m³/hr) to cubic feet per minute (CFM) for common flow rates. All values are calculated using the exact conversion factor of 0.5885777702 and rounded to three decimal places for practical engineering use.
| Flow Rate (m³/hr) | Cubic Feet per Minute (CFM) |
|---|---|
| 1 m³/hr | 0.589 CFM |
| 5 m³/hr | 2.943 CFM |
| 10 m³/hr | 5.886 CFM |
| 20 m³/hr | 11.772 CFM |
| 30 m³/hr | 17.657 CFM |
| 40 m³/hr | 23.543 CFM |
| 50 m³/hr | 29.429 CFM |
| 75 m³/hr | 44.143 CFM |
| 100 m³/hr | 58.858 CFM |
| 150 m³/hr | 88.287 CFM |
| 200 m³/hr | 117.716 CFM |
| 250 m³/hr | 147.144 CFM |
| 300 m³/hr | 176.573 CFM |
| 400 m³/hr | 235.431 CFM |
| 500 m³/hr | 294.289 CFM |
| 750 m³/hr | 441.433 CFM |
| 1000 m³/hr | 588.578 CFM |
Note: Values are based on the standard conversion equation: 1 m³/hr = 0.5885777702 CFM. For high-precision applications, use the calculator tool directly.
Unit Standardization: SI vs. Imperial Sizing in m3/hr to CFM
When working with m3/hr to CFM calculations, using consistent physical units is vital. Small translation errors between SI Metric units (like millimeters, kilowatts, and meters) and Imperial units (like AWG wire, horsepower, and feet) can lead to serious sizing errors:
| Dimension | SI Metric Unit | Imperial Unit | Conversion Conversion Factor |
|---|---|---|---|
| Power | Kilowatts (kW) | Horsepower (HP) | 1 kW ≈ 1.341 HP |
| Length | Meters (m) | Feet (ft) | 1 m ≈ 3.2808 ft |
| Flow Rate | Cubic meters/hr (m³/h) | Gallons/minute (GPM) | 1 m³/h ≈ 4.403 GPM |
Always perform unit checks before installing physical components for m3/hr to CFM to ensure they match equipment specification sheets.
Frequently Asked Questions (FAQs)
To convert cubic meters per hour (m3/hr) to cubic feet per minute (CFM), you multiply the m3/hr value by 0.588577. This is because one cubic meter equals roughly 35.3147 cubic feet, and an hour has 60 minutes. Dividing 35.3147 by 60 gives you the standard conversion multiplier of 0.588577.
The simple mathematical formula for converting m3/hr to CFM is: CFM = m3/hr × 0.5885. For example, if your air conditioning system has a flow rate of 1000 m3/hr, you would multiply 1000 by 0.5885 to get 588.5 CFM. This calculation is widely used in HVAC system design and performance testing.
No, 1 m3/hr is definitely not equal to 1 CFM. One cubic meter per hour is significantly less airflow than one cubic foot per minute. Specifically, 1 m3/hr is equal to approximately 0.5885 CFM. This means that a fan rated at 100 CFM provides much more air than a fan rated at 100 m3/hr.
You often need to convert m3/hr to CFM because different regions use different measurement systems. Most European and Asian manufacturers rate their ventilation equipment in m3/hr (metric), while the United States predominantly uses CFM (imperial) to specify building HVAC requirements.
To determine how many CFM are in 100 m3/hr, you apply the standard conversion factor. Multiply 100 by 0.5885, which results in 58.85 CFM. This flow rate is typical for small residential bathroom exhaust fans or localized spot ventilation applications requiring moderate air extraction.