Convert US gallons per hour to US quarts per second

Convert US gallons per hour (gph) to US quarts per second (qt/s) instantly and accurately.

US gallons per hour (gph)
US quarts per second (qt/s)

Conversion Formula

qt/s = gph × 0.001111111111

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 US quarts per second

The US quart per second (qt/s) equals 3.785411784×10⁻³/4 ≈ 9.464×10⁻⁴ m³/s, used in US industrial filling lines handling quart-size containers (motor oil, paint, sauce). A high-speed filling machine loading 1 qt bottles at 4 per second processes 4 qt/s per nozzle. 1 US qt/s ≈ 9.464×10⁻⁴ m³/s = 0.9464 L/s.

Quick Reference Table

US gallons per hour (gph)US quarts per second (qt/s)
1 gph0.00111111 qt/s
2 gph0.00222222 qt/s
5 gph0.00555556 qt/s
10 gph0.0111111 qt/s
25 gph0.0277778 qt/s
50 gph0.0555556 qt/s
100 gph0.111111 qt/s

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