Convert Cubic Kilometers to Acre-Feet
Convert Cubic Kilometers (km³) to Acre-Feet (ac ft) instantly and accurately.
Conversion Formula
ac ft = km³ × 810713.1938
About Cubic Kilometers
A cubic kilometre (km³) = 10⁹ m³ = 10¹² L. Lake Baikal: 23,615 km³ (world's largest freshwater lake by volume). Amazon River discharge: ~6,600 km³/year. Earth's total freshwater: ~35,000,000 km³; oceans: ~1,335,000,000 km³. Glaciologists track polar ice-sheet losses in km³/year as a key climate metric. 1 km³ = 10⁹ m³.
About Acre-Feet
An acre-foot (ac ft) = the volume covering 1 acre to 1 ft depth ≈ 1,233.5 m³ (325,851 US gal). Almost exclusively used in US water resource management. California's Lake Shasta: 4.55 million ac ft at capacity. A typical US household uses ~0.5-1 ac ft/year. Water rights on the Colorado and Sacramento rivers are traded in acre-feet. 1 ac ft ≈ 1,233.5 m³.
Quick Reference Table
| Cubic Kilometers (km³) | Acre-Feet (ac ft) |
|---|---|
| 1 km³ | 810713 ac ft |
| 2 km³ | 1621430 ac ft |
| 5 km³ | 4053570 ac ft |
| 10 km³ | 8107130 ac ft |
| 25 km³ | 20267800 ac ft |
| 50 km³ | 40535700 ac ft |
| 100 km³ | 81071300 ac ft |