Convert Cubic kilometres per year to Cubic inches per hour
Convert Cubic kilometres per year (km³/yr) to Cubic inches per hour (in³/h) instantly and accurately.
Conversion Formula
in³/h = km³/yr × 6961412742
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 Cubic inches per hour
The cubic inch per hour (in³/h) equals 1.6387064×10⁻⁵/3600 ≈ 4.552×10⁻⁹ m³/s, appearing in US oilfield plunger-pump capacity datasheets and slow hydraulic-actuator specifications. It is also used in US ASTM leak-test standards where maximum allowable leakage past a valve seal is expressed in in³/h at rated pressure. 1 in³/h ≈ 4.552×10⁻⁹ m³/s.
Quick Reference Table
| Cubic kilometres per year (km³/yr) | Cubic inches per hour (in³/h) |
|---|---|
| 1 km³/yr | 6.961 × 109 in³/h |
| 2 km³/yr | 1.392 × 1010 in³/h |
| 5 km³/yr | 3.481 × 1010 in³/h |
| 10 km³/yr | 6.961 × 1010 in³/h |
| 25 km³/yr | 1.74 × 1011 in³/h |
| 50 km³/yr | 3.481 × 1011 in³/h |
| 100 km³/yr | 6.961 × 1011 in³/h |