Convert UK gallons per minute to US gallons per hour
Convert UK gallons per minute (gpm) to US gallons per hour (gph) instantly and accurately.
Conversion Formula
gph = gpm × 72.05699553
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 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
| UK gallons per minute (gpm) | US gallons per hour (gph) |
|---|---|
| 1 gpm | 72.057 gph |
| 2 gpm | 144.114 gph |
| 5 gpm | 360.285 gph |
| 10 gpm | 720.57 gph |
| 25 gpm | 1801.42 gph |
| 50 gpm | 3602.85 gph |
| 100 gpm | 7205.7 gph |