Convert US gallons per hour to Millilitres per minute
Convert US gallons per hour (gph) to Millilitres per minute (mL/min) instantly and accurately.
Conversion Formula
mL/min = gph × 63.0901964
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 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
| US gallons per hour (gph) | Millilitres per minute (mL/min) |
|---|---|
| 1 gph | 63.0902 mL/min |
| 2 gph | 126.18 mL/min |
| 5 gph | 315.451 mL/min |
| 10 gph | 630.902 mL/min |
| 25 gph | 1577.25 mL/min |
| 50 gph | 3154.51 mL/min |
| 100 gph | 6309.02 mL/min |