Convert Cubic kilometres per year to Cubic feet per hour
Convert Cubic kilometres per year (km³/yr) to Cubic feet per hour (ft³/h) instantly and accurately.
Conversion Formula
ft³/h = km³/yr × 4028595.337
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 feet per hour
The cubic foot per hour (ft³/h) equals 0.028316846592/3600 ≈ 7.866×10⁻⁶ m³/s, used in US natural-gas metering (residential gas meters read in cubic feet; billing converts to CCF = 100 ft³) and historical furnace-fuel-consumption tables. A US residential gas furnace consumes 80-200 ft³/h of natural gas at full fire. 1 ft³/h ≈ 7.866×10⁻⁶ m³/s.
Quick Reference Table
| Cubic kilometres per year (km³/yr) | Cubic feet per hour (ft³/h) |
|---|---|
| 1 km³/yr | 4028600 ft³/h |
| 2 km³/yr | 8057190 ft³/h |
| 5 km³/yr | 20143000 ft³/h |
| 10 km³/yr | 40286000 ft³/h |
| 25 km³/yr | 100715000 ft³/h |
| 50 km³/yr | 201430000 ft³/h |
| 100 km³/yr | 402860000 ft³/h |