Convert US gallons per hour to Cubic metres per hour
Convert US gallons per hour (gph) to Cubic metres per hour (m³/h) instantly and accurately.
Conversion Formula
m³/h = gph × 0.003785411784
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 hour
The cubic metre per hour (m³/h) equals 1/3600 m³/s ≈ 2.778×10⁻⁴ m³/s, the dominant volumetric flow unit in European process engineering, HVAC, and water treatment. Pump datasheet curves, heat-exchanger sizing software, and wastewater-treatment design all use m³/h as the standard. A domestic water pump runs at 3-8 m³/h; a municipal WWTP inlet pump handles 500-5 000 m³/h. 1 m³/h ≈ 2.778×10⁻⁴ m³/s = 1 000 L/h.
Quick Reference Table
| US gallons per hour (gph) | Cubic metres per hour (m³/h) |
|---|---|
| 1 gph | 0.00378541 m³/h |
| 2 gph | 0.00757082 m³/h |
| 5 gph | 0.0189271 m³/h |
| 10 gph | 0.0378541 m³/h |
| 25 gph | 0.0946353 m³/h |
| 50 gph | 0.189271 m³/h |
| 100 gph | 0.378541 m³/h |