1. What Is CFM And mL/hr?

CFM (Cubic Feet per Minute) and mL/hr (Milliliters per Hour) are both units used to measure flow rates. CFM is commonly used in HVAC systems and air flow measurements, while mL/hr is often used in medical, laboratory, and industrial liquid flow applications.

2. How Does The Conversion Work?

The conversion formula is:

Where:

• \( mL/hr \) — Flow rate in milliliters per hour
• \( 28316.8 \) — Conversion factor (1 ft³ = 28316.8 mL, 1 hour = 60 minutes)

Explanation: This conversion accounts for both volume conversion (cubic feet to milliliters) and time conversion (hours to minutes).

3. Importance Of Flow Rate Conversion

Details: Accurate flow rate conversion is essential when working with different measurement systems, particularly in engineering, HVAC design, medical equipment calibration, and industrial processes where both imperial and metric units are used.

4. Using The Calculator

Tips: Enter the flow rate in milliliters per hour (mL/hr). The value must be a positive number. The calculator will automatically compute the equivalent value in cubic feet per minute (CFM).

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 28316.8?
A: This factor comes from converting both volume (1 cubic foot = 28316.8 milliliters) and time (1 hour = 60 minutes).

Q2: Can this conversion be used for both liquids and gases?
A: While the mathematical conversion is valid, actual flow characteristics may differ between liquids and gases due to compressibility and other factors.

Q3: What are typical applications for this conversion?
A: HVAC system design, medical ventilator settings, laboratory equipment calibration, and industrial process control.

Q4: How accurate is this conversion?
A: The mathematical conversion is exact, but practical accuracy depends on the precision of your input measurements.

Q5: Can I convert CFM back to mL/hr?
A: Yes, the reverse calculation is: mL/hr = CFM × 28316.8