Convert US gallons per minute to Millilitres per hour
Convert US gallons per minute (gpm) to Millilitres per hour (mL/h) instantly and accurately.
Conversion Formula
mL/h = gpm × 227124.707
About US gallons per minute
The US gallon per minute (gpm) equals 3.785411784×10⁻³/60 ≈ 6.309×10⁻⁵ m³/s, the dominant volumetric flow unit in US plumbing, HVAC, and water-treatment industries. EPA showerhead standards are set at 2.5 gpm; residential water meters size at 3/4"-1" for 5-20 gpm; municipal water-distribution design uses hundreds to thousands of gpm. 1 gpm ≈ 6.309×10⁻⁵ m³/s = 3.785 L/min.
About Millilitres per hour
The millilitre per hour (mL/h) equals 10⁻⁶/3600 ≈ 2.778×10⁻¹⁰ m³/s, standard for intravenous infusion pumps in clinical medicine and for slow-release laboratory syringe pumps. A 1 L IV bag running over 8 hours is set to 125 mL/h; subcutaneous insulin pumps deliver 1-100 mL/h of dilute insulin. 1 mL/h ≈ 2.778×10⁻¹⁰ m³/s.
Quick Reference Table
| US gallons per minute (gpm) | Millilitres per hour (mL/h) |
|---|---|
| 1 gpm | 227125 mL/h |
| 2 gpm | 454249 mL/h |
| 5 gpm | 1135620 mL/h |
| 10 gpm | 2271250 mL/h |
| 25 gpm | 5678120 mL/h |
| 50 gpm | 11356200 mL/h |
| 100 gpm | 22712500 mL/h |