Convert US quarts per hour to UK gallons per minute
Convert US quarts per hour (qt/h) to UK gallons per minute (gpm) instantly and accurately.
Conversion Formula
gpm = qt/h × 0.003469475769
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 minute
The UK (imperial) gallon per minute (gpm) equals 4.54609×10⁻³/60 ≈ 7.577×10⁻⁵ m³/s, historically used in British plumbing design, pump curves, and water-treatment plant sizing. Pre-metric UK water-industry capacity tables and pump manufacturers quoted flows in UK gal/min; legacy British Standard BS EN pump curves often show both units. 1 UK gpm ≈ 7.577×10⁻⁵ m³/s ≈ 4.546 L/min.
Quick Reference Table
| US quarts per hour (qt/h) | UK gallons per minute (gpm) |
|---|---|
| 1 qt/h | 0.00346948 gpm |
| 2 qt/h | 0.00693895 gpm |
| 5 qt/h | 0.0173474 gpm |
| 10 qt/h | 0.0346948 gpm |
| 25 qt/h | 0.0867369 gpm |
| 50 qt/h | 0.173474 gpm |
| 100 qt/h | 0.346948 gpm |