Convert US pints per hour to Cubic kilometres per year
Convert US pints per hour (pt/h) to Cubic kilometres per year (km³/yr) instantly and accurately.
Conversion Formula
km³/yr = pt/h × 4.147864962e-9
About US pints per hour
The US pint per hour (pt/h) equals 3.785411784×10⁻³/8/3600 ≈ 1.314×10⁻⁷ m³/s, used in US medical-device standards for slow-drip infusion and in American homebrew calculations for sparge water addition rates. A slow gravity sparge at 24 pt/h = 3 US gal/h is typical for small-batch homebrewing. 1 US pt/h ≈ 1.314×10⁻⁷ m³/s.
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
| US pints per hour (pt/h) | Cubic kilometres per year (km³/yr) |
|---|---|
| 1 pt/h | 4.148 × 10-9 km³/yr |
| 2 pt/h | 8.296 × 10-9 km³/yr |
| 5 pt/h | 2.074 × 10-8 km³/yr |
| 10 pt/h | 4.148 × 10-8 km³/yr |
| 25 pt/h | 1.037 × 10-7 km³/yr |
| 50 pt/h | 2.074 × 10-7 km³/yr |
| 100 pt/h | 4.148 × 10-7 km³/yr |