Understanding CFM and PSI in Compressors: What You Need to Know

PT Nissandi Kompresindo – When choosing or operating an air compressor, two critical specifications often appear: CFM (Cubic Feet per Minute) and PSI (Pounds per Square Inch). Understanding these terms can help you make better decisions for performance, efficiency, and equipment compatibility.

What is CFM?

CFM (Cubic Feet per Minute) measures air volume output—how much air the compressor delivers per minute.

• A higher CFM means more airflow, which is important for powering multiple tools or air-hungry equipment.

• It varies with pressure (PSI), temperature, and humidity.

Example:
A spray gun may require 5 CFM at 40 PSI. If your compressor delivers only 3 CFM, it won’t work properly.

What is PSI?

PSI (Pounds per Square Inch) measures air pressure—how much force the air has when delivered.

• Tools and machines are rated for specific PSI levels.

• Too low: your tools won’t operate.

• Too high: it can damage equipment or create safety risks.

Example:
A tire inflator needs around 90 PSI. Compressors that deliver less won’t inflate tires efficiently.

CFM vs PSI: What’s More Important?

It depends on your application:

Both CFM and PSI must meet your tool’s requirements.

How to Calculate Your CFM Needs

1. List all air tools you’ll use.

2. Find the highest CFM requirement.

3. Multiply by 1.5 or 2 for a safety margin.

Example: If your tool needs 4 CFM at 90 PSI, choose a compressor that provides at least 6–8 CFM at 90 PSI.

Need Help Matching CFM & PSI?

PT Nissandi Kompresindo offers a wide range of air compressors tailored to your exact CFM and PSI needs. Whether you’re in automotive, construction, manufacturing, or service, we can help you:

• Identify your true air demand

• Recommend matching units (Sollant, Swan, Fusheng, etc.)

• Deliver and install with full service & support

Understanding CFM and PSI = Better Productivity + Less Downtime
Let the experts at PT Nissandi Kompresindo guide you.