Convert US gallons per minute to Cubic inches per minute
Convert US gallons per minute (gpm) to Cubic inches per minute (in³/min) instantly and accurately.
Conversion Formula
in³/min = gpm × 231
About US gallons per minute
The US gallon per minute (gpm) equals 3.785411784×10⁻³/60 ≈ 6.309×10⁻⁵ m³/s, the dominant volumetric flow unit in US plumbing, HVAC, and water-treatment industries. EPA showerhead standards are set at 2.5 gpm; residential water meters size at 3/4"-1" for 5-20 gpm; municipal water-distribution design uses hundreds to thousands of gpm. 1 gpm ≈ 6.309×10⁻⁵ m³/s = 3.785 L/min.
About Cubic inches per minute
The cubic inch per minute (in³/min) equals 1.6387064×10⁻⁵/60 ≈ 2.731×10⁻⁷ m³/s, common in US pneumatic and hydraulic circuit design. Air-tool consumption is rated in SCIM (standard cubic inches per minute); small hydraulic cylinders advancing at 10 in/min with 1 in² bore consume 10 in³/min: exactly 0.163 mL/s. 1 in³/min ≈ 2.731×10⁻⁷ m³/s.
Quick Reference Table
| US gallons per minute (gpm) | Cubic inches per minute (in³/min) |
|---|---|
| 1 gpm | 231 in³/min |
| 2 gpm | 462 in³/min |
| 5 gpm | 1155 in³/min |
| 10 gpm | 2310 in³/min |
| 25 gpm | 5775 in³/min |
| 50 gpm | 11550 in³/min |
| 100 gpm | 23100 in³/min |