Convert UK gallons per minute to Cubic metres per hour
Convert UK gallons per minute (gpm) to Cubic metres per hour (m³/h) instantly and accurately.
Conversion Formula
m³/h = gpm × 0.2727654
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 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
| UK gallons per minute (gpm) | Cubic metres per hour (m³/h) |
|---|---|
| 1 gpm | 0.272765 m³/h |
| 2 gpm | 0.545531 m³/h |
| 5 gpm | 1.36383 m³/h |
| 10 gpm | 2.72765 m³/h |
| 25 gpm | 6.81914 m³/h |
| 50 gpm | 13.6383 m³/h |
| 100 gpm | 27.2765 m³/h |