Estimate rifle chamber pressure conversions between CUP and PSI in both directions, including kCUP, kpsi, MPa, and bar equivalents. What do you want to solve for?Convert CUP to PSIConvert PSI to CUP Pressure in CUP (copper units of pressure, required) Pressure in PSI (pounds per square inch, required) CalculateReset Customize or create a new calculator⌃ … Continue reading CUP ↔ PSI Calculator