Gas Flow Unit Conversion Calculator: Standard Cubic Feet per Minute (SCFM) to Standard Cubic Feet per Hour (SCFH)

The SCFM to SCFH Conversion Calculator makes it easy for engineers, technicians, and control system designers to change gas flow from Standard Cubic Feet per Minute (SCFM) to Standard Cubic Feet per Hour (SCFH). This change is necessary to make sure that all system documentation, control loop settings, instrumentation specs, and regulatory reporting use the same units. This is especially important in fields like HVAC, energy, environmental monitoring, and gas processing.

Definition: Standard Cubic Feet per Minute (SCFM)

SCFM is a common U.S. measure of gas flow that shows how much gas is moving per minute under normal conditions (usually 14.7 psia, 68–70°F, and 0% relative humidity). SCFM is the main unit used in high-flow systems including gas supply skids, compressed air systems, and blower performance ratings.

Key Applications of SCFM:

• Sizing air dryers, compressors, and pneumatic tools.
• Setting the gas flow for industrial machines and automated systems.
• Finding the volumetric gas flow in pipelines and distribution systems.
• Checking the airflow in HVAC and ventilation systems in factories.

Definition: Standard Cubic Feet per Hour (SCFH)

SCFH is another unit of measurement in the U.S. that shows how much gas flows in an hour. It’s employed in situations where longer average intervals, precise monitoring of consumption, or lower flow rates are needed, like in fuel gas burners, lab-scale reactors, or calibration systems.

Key Applications of SCFH:

• Keep an eye on how much natural gas or fuel is being used in boilers and furnaces.
• Setting up gas analyzers or measuring tools.
• Measuring gas flow over a lengthy period of time in systems that monitor the environment.
• Setting flow rates in burner management units and process safety systems.

Formula for SCFM to SCFH Conversion

To convert SCFM to SCFH, apply the following formula:

Flow in SCFH=Flow in SCFM×60

Since there are 60 minutes in an hour, multiplying the SCFM value by 60 gives the equivalent flow rate per hour.

Example Calculation

If a gas supply delivers 25 SCFM, to convert to SCFH:

25 SCFM×60=1,500 SCFH

So, a flow rate of 25 SCFM is equal to 1,500 SCFH.

Quick Reference Conversion Table

Uses of SCFM to SCFH Conversion

• Process Control Engineering: Matches minute-based control settings with hourly flow reports.
• Instrument Scaling: Makes sure that the settings for the flow transmitter and data logger are correct.
• Energy Management: Helps figure out how much energy is used each hour for audits and efficiency reports.
• Maintenance and Troubleshooting: lets you compare logged hourly values with live SCFM sensor outputs.
• Regulatory Compliance: Changes data so that it meets the standards of a reporting unit in a certain industry or location.

This conversion calculator is a must-have for HVAC consultants, instrumentation specialists, system integrators, and gas utility engineers who want to make sure that flow measurement and documentation are always accurate and consistent.

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