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Conversion Formula:
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CFM (Cubic Feet per Minute) and CMH (Cubic Meters per Hour) are both units used to measure air flow rate. The conversion between these units is essential for HVAC professionals, engineers, and technicians working with ventilation systems in different measurement systems.
The calculator uses the conversion formula:
Where:
Explanation: This conversion accounts for the difference between imperial and metric volume measurements as well as the time unit conversion from minutes to hours.
Details: Accurate air flow conversion is crucial for HVAC system design, ventilation requirements, fan selection, and ensuring proper air quality standards in buildings and industrial applications.
Tips: Enter CFM value in cubic feet per minute. The value must be positive and valid. The calculator will automatically compute the equivalent CMH value.
Q1: Why is the conversion factor 1.699?
A: 1 cubic foot = 0.0283168 cubic meters and 1 hour = 60 minutes, so 1 CFM = 0.0283168 × 60 = 1.699 m³/h
Q2: When would I need to convert between CFM and CMH?
A: When working with international standards, equipment specifications from different regions, or when converting between imperial and metric measurement systems.
Q3: Are there different conversion factors for different applications?
A: The conversion factor is mathematically precise and remains constant regardless of application. However, always verify the specific units being used in your context.
Q4: Can this calculator be used for liquid flow conversions?
A: No, this calculator is specifically designed for air flow conversions. Liquid flow conversions may involve different considerations.
Q5: How accurate is this conversion?
A: The conversion is mathematically exact. The accuracy of your result depends on the accuracy of your input CFM value.