Convert UK gallons per minute to Millilitres per minute
Convert UK gallons per minute (gpm) to Millilitres per minute (mL/min) instantly and accurately.
Conversion Formula
mL/min = gpm × 4546.09
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 Millilitres per minute
The millilitre per minute (mL/min) equals 10⁻⁶/60 ≈ 1.667×10⁻⁸ m³/s, the standard flow rate unit for HPLC and preparative chromatography. A reverse-phase HPLC column (4.6 mm i.d.) operates at 1-2 mL/min; a cardiac output catheter measures 4 000-8 000 mL/min (= L/min). 1 mL/min ≈ 1.667×10⁻⁸ m³/s = 60 mL/h.
Quick Reference Table
| UK gallons per minute (gpm) | Millilitres per minute (mL/min) |
|---|---|
| 1 gpm | 4546.09 mL/min |
| 2 gpm | 9092.18 mL/min |
| 5 gpm | 22730.5 mL/min |
| 10 gpm | 45460.9 mL/min |
| 25 gpm | 113652 mL/min |
| 50 gpm | 227305 mL/min |
| 100 gpm | 454609 mL/min |