Convert UK gallons per second to Million litres per day
Convert UK gallons per second (gal/s) to Million litres per day (ML/d) instantly and accurately.
Conversion Formula
ML/d = gal/s × 0.392782176
About UK gallons per second
The UK (imperial) gallon per second (gal/s) equals 4.54609×10⁻³ m³/s, about 20% larger than the US gallon per second. It appears in pre-metric British fire-fighting standards, large pump test certificates, and naval engineering calculations. A UK fire engine pump rated 1 000 UK gal/min delivers ≈16.67 UK gal/s. 1 UK gal/s = 4.54609×10⁻³ m³/s ≈ 1.201 US gal/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 second (gal/s) | Million litres per day (ML/d) |
|---|---|
| 1 gal/s | 0.392782 ML/d |
| 2 gal/s | 0.785564 ML/d |
| 5 gal/s | 1.96391 ML/d |
| 10 gal/s | 3.92782 ML/d |
| 25 gal/s | 9.81955 ML/d |
| 50 gal/s | 19.6391 ML/d |
| 100 gal/s | 39.2782 ML/d |