Convert Cubic kilometres per year to US gallons per hour
Convert Cubic kilometres per year (km³/yr) to US gallons per hour (gph) instantly and accurately.
Conversion Formula
gph = km³/yr × 30135985.9
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 US gallons per hour
The US gallon per hour (gph) equals 3.785411784×10⁻³/3600 ≈ 1.051×10⁻⁶ m³/s, common in oil-burner nozzle ratings, water-softener regeneration, and RV/marine-plumbing specifications. Residential oil-burner nozzles are rated in gph (e.g., 0.75 gph, 1.00 gph); a small boat bilge pump might handle 200-500 gph. 1 US gph ≈ 1.052×10⁻⁶ m³/s ≈ 3.785 L/h.
Quick Reference Table
| Cubic kilometres per year (km³/yr) | US gallons per hour (gph) |
|---|---|
| 1 km³/yr | 30136000 gph |
| 2 km³/yr | 60272000 gph |
| 5 km³/yr | 150680000 gph |
| 10 km³/yr | 301360000 gph |
| 25 km³/yr | 753400000 gph |
| 50 km³/yr | 1.507 × 109 gph |
| 100 km³/yr | 3.014 × 109 gph |