Convert US gallons per day to Millilitres per hour
Convert US gallons per day (gpd) to Millilitres per hour (mL/h) instantly and accurately.
Conversion Formula
mL/h = gpd × 157.725491
About US gallons per day
The US gallon per day (gpd) equals 3.785411784×10⁻³/86400 ≈ 4.381×10⁻⁸ m³/s, the standard unit in US water-utility regulation and residential water-well pump sizing. The US national average residential water use is about 80-100 gpd per person; a reverse-osmosis membrane module is rated in gpd (50-100 gpd for domestic units). 1 US gpd ≈ 4.381×10⁻⁸ m³/s.
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 day (gpd) | Millilitres per hour (mL/h) |
|---|---|
| 1 gpd | 157.725 mL/h |
| 2 gpd | 315.451 mL/h |
| 5 gpd | 788.627 mL/h |
| 10 gpd | 1577.25 mL/h |
| 25 gpd | 3943.14 mL/h |
| 50 gpd | 7886.27 mL/h |
| 100 gpd | 15772.5 mL/h |