Air Receiver Tank Sizing Calculator

Tank volume from compressor output and demand fluctuation.

Peak air demand (CFM)

Operating pressure (psig)

Minimum pressure (psig)

Allowable drop time (min)

Tab to move between fields

Required tank volume (gal)

219.9

Recommended standard tank (gal)240

Required volume (liters)832.5

Usable pressure differential (psi)25

Pressure ratio (P2/P1)0.82

How to Use This Calculator

Enter the peak air demand in CFM during compressor-off events.
Set allowable pressure drop in PSI and minimum acceptable system pressure.
Input compressor duty cycle and maximum operating pressure.
Review the recommended receiver tank volume in gallons.
Select the nearest standard tank size from manufacturer catalogs based on the calculated volume.

How the result changes with Operating pressure (psig)

Peak air demand (CFM): Maximum air demand during a peak event or compressor-off period, in cubic feet per minute.
Operating pressure (psig): Normal system operating pressure in gauge PSI.
Minimum pressure (psig): Lowest acceptable system pressure before tools/processes are affected.
Allowable drop time (min): Time in minutes the system must sustain demand with the compressor off or during load/unload transition.

Required tank volume (gal): Calculated minimum receiver tank volume in US gallons.
Recommended standard tank (gal): Next standard tank size available from manufacturers.
Required volume (liters): Tank volume in liters for metric reference.
Usable pressure differential (psi): Difference between operating and minimum pressure — the usable stored energy.
Pressure ratio (P2/P1): Ratio of minimum to maximum absolute pressure. Lower means more stored energy is usable.

Identify Input Parameters
4 parameters
Peak air demand (CFM) = 50, Operating pressure (psig) = 125, Minimum pressure (psig) = 100, Allowable drop time (min) = 1 = 4 input(s) provided
Calculate Required tank volume
Required tank volume = volumeCf * 7.48052
219.9 = 219.9
Calculate Recommended standard tank
240 = 240
Calculate Required volume
Required volume = volumeGallons * 3.78541
832.5 = 832.5