Convert US gallons per hour to Cubic metres per second
Convert US gallons per hour (gph) to Cubic metres per second (m³/s) instantly and accurately.
Conversion Formula
m³/s = gph × 1.051503273e-6
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.
About Cubic metres per second
The cubic metre per second (m³/s) is the SI coherent unit of volumetric flow rate. It is used for large river discharges, turbine inlet flows, and major pipeline capacities. The Amazon River at its mouth averages ≈200 000 m³/s; a large hydroelectric turbine passes 400-800 m³/s; a major municipal water-main carries 5-20 m³/s. 1 m³/s = 1 000 L/s ≈ 15 850 US gal/min = 35.315 ft³/s.
Quick Reference Table
| US gallons per hour (gph) | Cubic metres per second (m³/s) |
|---|---|
| 1 gph | 1.052 × 10-6 m³/s |
| 2 gph | 2.103 × 10-6 m³/s |
| 5 gph | 5.258 × 10-6 m³/s |
| 10 gph | 1.052 × 10-5 m³/s |
| 25 gph | 2.629 × 10-5 m³/s |
| 50 gph | 5.258 × 10-5 m³/s |
| 100 gph | 0.00010515 m³/s |