Convert Cubic metres per hour to US gallons per day
Convert Cubic metres per hour (m³/h) to US gallons per day (gpd) instantly and accurately.
Conversion Formula
gpd = m³/h × 6340.129257
About Cubic metres per hour
The cubic metre per hour (m³/h) equals 1/3600 m³/s ≈ 2.778×10⁻⁴ m³/s, the dominant volumetric flow unit in European process engineering, HVAC, and water treatment. Pump datasheet curves, heat-exchanger sizing software, and wastewater-treatment design all use m³/h as the standard. A domestic water pump runs at 3-8 m³/h; a municipal WWTP inlet pump handles 500-5 000 m³/h. 1 m³/h ≈ 2.778×10⁻⁴ m³/s = 1 000 L/h.
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.
Quick Reference Table
| Cubic metres per hour (m³/h) | US gallons per day (gpd) |
|---|---|
| 1 m³/h | 6340.13 gpd |
| 2 m³/h | 12680.3 gpd |
| 5 m³/h | 31700.6 gpd |
| 10 m³/h | 63401.3 gpd |
| 25 m³/h | 158503 gpd |
| 50 m³/h | 317006 gpd |
| 100 m³/h | 634013 gpd |