Convert US gallons per hour to UK gallons per day
Convert US gallons per hour (gph) to UK gallons per day (gpd) instantly and accurately.
Conversion Formula
gpd = gph × 19.98418043
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 UK gallons per day
The UK gallon per day (gpd) equals 4.54609×10⁻³/86400 ≈ 5.261×10⁻⁸ m³/s, used in British per-capita water-consumption statistics and pre-metric water-authority regulation. Historic UK Water Acts set minimum supply standards in UK gal/d per household; older UK borehole pump test reports quote sustained yield in UK gal/d. 1 UK gpd ≈ 5.261×10⁻⁸ m³/s.
Quick Reference Table
| US gallons per hour (gph) | UK gallons per day (gpd) |
|---|---|
| 1 gph | 19.9842 gpd |
| 2 gph | 39.9684 gpd |
| 5 gph | 99.9209 gpd |
| 10 gph | 199.842 gpd |
| 25 gph | 499.605 gpd |
| 50 gph | 999.209 gpd |
| 100 gph | 1998.42 gpd |