Convert US gallons per minute to US gallons per hour
Convert US gallons per minute (gpm) to US gallons per hour (gph) instantly and accurately.
Conversion Formula
gph = gpm × 60
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 US gallons per hour
The US gallon per hour (gph) equals 3.785411784×10⁻³/3600 ≈ 1.051×10⁻⁶ m³/s, common in oil-burner nozzle ratings, water-softener regeneration, and RV/marine-plumbing specifications. Residential oil-burner nozzles are rated in gph (e.g., 0.75 gph, 1.00 gph); a small boat bilge pump might handle 200-500 gph. 1 US gph ≈ 1.052×10⁻⁶ m³/s ≈ 3.785 L/h.
Quick Reference Table
| US gallons per minute (gpm) | US gallons per hour (gph) |
|---|---|
| 1 gpm | 60 gph |
| 2 gpm | 120 gph |
| 5 gpm | 300 gph |
| 10 gpm | 600 gph |
| 25 gpm | 1500 gph |
| 50 gpm | 3000 gph |
| 100 gpm | 6000 gph |