Convert US quarts per hour to UK gallons per hour

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

US quarts per hour (qt/h)
UK gallons per hour (gph)

Conversion Formula

gph = qt/h × 0.2081685462

About US quarts per hour

The US quart per hour (qt/h) equals 3.785411784×10⁻³/4/3600 ≈ 2.629×10⁻⁷ m³/s, used in US agricultural irrigation drippers (emitters rated in qt/h) and hobby aquaculture systems. A drip emitter rated 1 qt/h ≈ 0.946 L/h is a common size for garden irrigation in the US market. 1 US qt/h ≈ 2.629×10⁻⁷ m³/s.

About UK gallons per hour

The UK gallon per hour (gph) equals 4.54609×10⁻³/3600 ≈ 1.263×10⁻⁶ m³/s, found in pre-metric British burner-nozzle ratings, oil-consumption logs for diesel generators, and ship fuel-economy records. British aviation fuel consumption was once published in UK gal/h; legacy Lloyd's Register tanker descriptions used UK gal/h for cargo pump capacities. 1 UK gph ≈ 1.263×10⁻⁶ m³/s.

Quick Reference Table

US quarts per hour (qt/h)UK gallons per hour (gph)
1 qt/h0.208169 gph
2 qt/h0.416337 gph
5 qt/h1.04084 gph
10 qt/h2.08169 gph
25 qt/h5.20421 gph
50 qt/h10.4084 gph
100 qt/h20.8169 gph

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