Convert Million litres per day to Cubic kilometres per year
Convert Million litres per day (ML/d) to Cubic kilometres per year (km³/yr) instantly and accurately.
Conversion Formula
km³/yr = ML/d × 0.00036525
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.
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.
Quick Reference Table
| Million litres per day (ML/d) | Cubic kilometres per year (km³/yr) |
|---|---|
| 1 ML/d | 0.00036525 km³/yr |
| 2 ML/d | 0.0007305 km³/yr |
| 5 ML/d | 0.00182625 km³/yr |
| 10 ML/d | 0.0036525 km³/yr |
| 25 ML/d | 0.00913125 km³/yr |
| 50 ML/d | 0.0182625 km³/yr |
| 100 ML/d | 0.036525 km³/yr |