Convert Cubic feet per minute to Cubic kilometres per year
Convert Cubic feet per minute (ft³/min) to Cubic kilometres per year (km³/yr) instantly and accurately.
Conversion Formula
km³/yr = ft³/min × 1.489352863e-5
About Cubic feet per minute
The cubic foot per minute (cfm or ft³/min) equals 0.028316846592/60 ≈ 4.719×10⁻⁴ m³/s, the dominant unit for ventilation, HVAC airflow, and compressed-air system design in the US. ASHRAE ventilation standards, building-code fresh-air requirements, and dust-collector capacity are all stated in cfm. A residential HVAC system moves 800-1 200 cfm; an industrial dust collector handles 2 000-20 000 cfm. 1 cfm ≈ 0.4719 L/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
| Cubic feet per minute (ft³/min) | Cubic kilometres per year (km³/yr) |
|---|---|
| 1 ft³/min | 1.489 × 10-5 km³/yr |
| 2 ft³/min | 2.979 × 10-5 km³/yr |
| 5 ft³/min | 7.447 × 10-5 km³/yr |
| 10 ft³/min | 0.000148935 km³/yr |
| 25 ft³/min | 0.000372338 km³/yr |
| 50 ft³/min | 0.000744676 km³/yr |
| 100 ft³/min | 0.00148935 km³/yr |