Convert UK gallons per day to Million litres per day
Convert UK gallons per day (gpd) to Million litres per day (ML/d) instantly and accurately.
Conversion Formula
ML/d = gpd × 4.546090000e-6
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.
About Million litres per day
The million litres per day (ML/d or MLD) equals 1000/86400 ≈ 0.011574 m³/s, the standard capacity unit for water-treatment plants, sewage-treatment works, and desalination facilities in the UK, India, and much of the Commonwealth. A small town water-treatment works processes 5-20 ML/d; the Beckton Sewage Treatment Works in London treats ≈700 ML/d. 1 ML/d ≈ 0.011574 m³/s = 1 000 m³/d.
Quick Reference Table
| UK gallons per day (gpd) | Million litres per day (ML/d) |
|---|---|
| 1 gpd | 4.546 × 10-6 ML/d |
| 2 gpd | 9.092 × 10-6 ML/d |
| 5 gpd | 2.273 × 10-5 ML/d |
| 10 gpd | 4.546 × 10-5 ML/d |
| 25 gpd | 0.000113652 ML/d |
| 50 gpd | 0.000227305 ML/d |
| 100 gpd | 0.000454609 ML/d |