Convert Cubic kilometres per year to Megalitres per day
Convert Cubic kilometres per year (km³/yr) to Megalitres 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 Megalitres per day
The megalitre per day (ML/d) equals 1000/86400 ≈ 0.011574 m³/s, numerically identical to million litres per day. It is the preferred notation in Australian water-authority reporting, environmental flow assessments, and reservoir storage accounting. Murray-Darling Basin environmental flows are specified in ML/d; urban water utilities publish reservoir capacity and daily draw in ML/d. 1 ML/d ≈ 0.011574 m³/s = 1 000 m³/d.
Quick Reference Table
| Cubic kilometres per year (km³/yr) | Megalitres 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 |