Convert UK gallons per minute to US gallons per minute
Convert UK gallons per minute (gpm) to US gallons per minute (gpm) instantly and accurately.
Conversion Formula
gpm = gpm × 1.200949926
About UK gallons per minute
The UK (imperial) gallon per minute (gpm) equals 4.54609×10⁻³/60 ≈ 7.577×10⁻⁵ m³/s, historically used in British plumbing design, pump curves, and water-treatment plant sizing. Pre-metric UK water-industry capacity tables and pump manufacturers quoted flows in UK gal/min; legacy British Standard BS EN pump curves often show both units. 1 UK gpm ≈ 7.577×10⁻⁵ m³/s ≈ 4.546 L/min.
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.
Quick Reference Table
| UK gallons per minute (gpm) | US gallons per minute (gpm) |
|---|---|
| 1 gpm | 1.20095 gpm |
| 2 gpm | 2.4019 gpm |
| 5 gpm | 6.00475 gpm |
| 10 gpm | 12.0095 gpm |
| 25 gpm | 30.0237 gpm |
| 50 gpm | 60.0475 gpm |
| 100 gpm | 120.095 gpm |