Convert Cubic kilometres per year to UK gallons per second
Convert Cubic kilometres per year (km³/yr) to UK gallons per second (gal/s) instantly and accurately.
Conversion Formula
gal/s = km³/yr × 6970.404856
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 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.
Quick Reference Table
| Cubic kilometres per year (km³/yr) | UK gallons per second (gal/s) |
|---|---|
| 1 km³/yr | 6970.4 gal/s |
| 2 km³/yr | 13940.8 gal/s |
| 5 km³/yr | 34852 gal/s |
| 10 km³/yr | 69704 gal/s |
| 25 km³/yr | 174260 gal/s |
| 50 km³/yr | 348520 gal/s |
| 100 km³/yr | 697040 gal/s |