Convert Cubic kilometres per year to Litres per second
Convert Cubic kilometres per year (km³/yr) to Litres per second (L/s) instantly and accurately.
Conversion Formula
L/s = km³/yr × 31688.08781
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 Litres per second
The litre per second (L/s) equals 10⁻³ m³/s, the standard unit for municipal water-supply engineering, fire-fighting flows, and HVAC system air handling. A fire hydrant delivers 15-30 L/s; a household mains water connection is typically 0.1-0.5 L/s; a large building HVAC chilled-water loop circulates 50-200 L/s. 1 L/s = 10⁻³ m³/s = 3.6 m³/h ≈ 15.85 US gal/min.
Quick Reference Table
| Cubic kilometres per year (km³/yr) | Litres per second (L/s) |
|---|---|
| 1 km³/yr | 31688.1 L/s |
| 2 km³/yr | 63376.2 L/s |
| 5 km³/yr | 158440 L/s |
| 10 km³/yr | 316881 L/s |
| 25 km³/yr | 792202 L/s |
| 50 km³/yr | 1584400 L/s |
| 100 km³/yr | 3168810 L/s |