1. What is an Air Compressor Flow Rate Calculator?

Definition: This calculator estimates the air flow rate (CFM) of a compressor based on its horsepower and operating pressure.

Purpose: It helps professionals and DIYers determine the air delivery capacity of compressors for various tools and applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Air flow rate (cubic feet per minute, CFM)
• \( HP \) — Compressor horsepower
• \( P \) — Operating pressure (pounds per square inch, psi)

Explanation: The formula estimates CFM by accounting for the compressor's power and how pressure affects its air delivery capacity.

3. Importance of Air Flow Rate Calculation

Details: Proper CFM estimation ensures your compressor can adequately power air tools and meet system requirements without overworking.

4. Using the Calculator

Tips: Enter the compressor's horsepower and operating pressure (default 100 psi). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is 14.7 used in the formula?
A: 14.7 psi represents atmospheric pressure at sea level, used to normalize the pressure ratio.

Q2: What's a typical CFM for common air tools?
A: Most tools require 2-10 CFM, with larger tools needing 10-20 CFM or more.

Q3: How accurate is this estimation?
A: It provides a rough estimate; actual CFM depends on compressor efficiency, design, and conditions.

Q4: Should I get a compressor with higher CFM than my tools require?
A: Yes, it's recommended to have 30-50% more CFM than your tools' total requirements.

Q5: What if my tools need more CFM than my compressor provides?
A: The compressor will cycle frequently, reducing tool performance and potentially damaging the compressor.