Convert Cubic metres per hour to UK gallons per minute
Convert Cubic metres per hour (m³/h) to UK gallons per minute (gpm) instantly and accurately.
Conversion Formula
gpm = m³/h × 3.666154138
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.
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.
Quick Reference Table
| Cubic metres per hour (m³/h) | UK gallons per minute (gpm) |
|---|---|
| 1 m³/h | 3.66615 gpm |
| 2 m³/h | 7.33231 gpm |
| 5 m³/h | 18.3308 gpm |
| 10 m³/h | 36.6615 gpm |
| 25 m³/h | 91.6539 gpm |
| 50 m³/h | 183.308 gpm |
| 100 m³/h | 366.615 gpm |