Convert US gallons per hour to Litres per second
Convert US gallons per hour (gph) to Litres per second (L/s) instantly and accurately.
Conversion Formula
L/s = gph × 0.001051503273
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 Litres per second
The litre per second (L/s) equals 10⁻³ m³/s, the standard unit for municipal water-supply engineering, fire-fighting flows, and HVAC system air handling. A fire hydrant delivers 15-30 L/s; a household mains water connection is typically 0.1-0.5 L/s; a large building HVAC chilled-water loop circulates 50-200 L/s. 1 L/s = 10⁻³ m³/s = 3.6 m³/h ≈ 15.85 US gal/min.
Quick Reference Table
| US gallons per hour (gph) | Litres per second (L/s) |
|---|---|
| 1 gph | 0.0010515 L/s |
| 2 gph | 0.00210301 L/s |
| 5 gph | 0.00525752 L/s |
| 10 gph | 0.010515 L/s |
| 25 gph | 0.0262876 L/s |
| 50 gph | 0.0525752 L/s |
| 100 gph | 0.10515 L/s |