Convert Cubic kilometres per year to Million litres per day
Convert Cubic kilometres per year (km³/yr) to Million litres per day (ML/d) instantly and accurately.
Conversion Formula
ML/d = km³/yr × 2737.850787
About Cubic kilometres per year
The cubic kilometre per year (km³/yr) equals 10⁹/(365.25×86400) ≈ 31.688 m³/s, the unit used in global hydrology, glaciology, and climate science for river basin runoff, ice-sheet mass balance, and groundwater storage change. Total global freshwater river runoff is ≈37 000 km³/yr; the Amazon alone contributes ≈6 600 km³/yr; the Greenland ice sheet loses ≈280 km³/yr to melt and calving. 1 km³/yr ≈ 31.69 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
| Cubic kilometres per year (km³/yr) | Million litres per day (ML/d) |
|---|---|
| 1 km³/yr | 2737.85 ML/d |
| 2 km³/yr | 5475.7 ML/d |
| 5 km³/yr | 13689.3 ML/d |
| 10 km³/yr | 27378.5 ML/d |
| 25 km³/yr | 68446.3 ML/d |
| 50 km³/yr | 136893 ML/d |
| 100 km³/yr | 273785 ML/d |