Convert UK gallons per minute to Cubic metres per second
Convert UK gallons per minute (gpm) to Cubic metres per second (m³/s) instantly and accurately.
Conversion Formula
m³/s = gpm × 7.576816667e-5
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 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
| UK gallons per minute (gpm) | Cubic metres per second (m³/s) |
|---|---|
| 1 gpm | 7.577 × 10-5 m³/s |
| 2 gpm | 0.000151536 m³/s |
| 5 gpm | 0.000378841 m³/s |
| 10 gpm | 0.000757682 m³/s |
| 25 gpm | 0.0018942 m³/s |
| 50 gpm | 0.00378841 m³/s |
| 100 gpm | 0.00757682 m³/s |