These two measures are inversely related: as pressure (PSI) increases, the flow rate (CFM) decreases, and vice versa. In compressed air terms, pressure delivers the force, yet horsepower delivers the flow. The compressor must provide the right amount of pressure, or force, needed to complete the process. It expresses the compressor’s ability to perform a specified amount of work at any given point in time. PSI (Pounds per Square Inch) is the “Pressure”. With insufficient flow, the compressor will require breaks to rebuild pressure in the compressor’s reserve tank. It expresses the amount of flow needed and depends on the length of time required to complete the task.
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What Is the Relationship Between CFM and PSI?ĬFM is the “Flow” or the compressor’s ability to continue performing a certain task over time. In compressed air, this means it is a measure of the flow or output rate that air is coming out of your compressor.
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It is a measurement of how fast air flows into or out of a space.
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If you don’t have enough airflow to power all of your tools and processes, you may find yourself without enough air for efficient operations. Use our air compressor CFM calculator below to help you quickly and easily calculate your CFM output! Why Do You Need to Calculate Your Air Compressor CFM?Ĭalculating your airflow requirements for compressed air is important for properly sizing your air compressor. You may also want to calculate your CFM demand to determine whether your compressed air output meets your airflow requirements. In this article, we are going to show you how to calculate the compressed air flow rate of your air compressor using the CFM formula or our easy online calculator. Looking for a free and easy CFM calculator to determine how much compressed air your compressor is producing? Our online CFM calculator can help you properly size your air compressor and make sure you’ve got enough airflow to meet your compressed air demand.