Convert Acre-Feet to Cubic Kilometers
Convert Acre-Feet (ac ft) to Cubic Kilometers (km³) instantly and accurately.
Conversion Formula
km³ = ac ft × 1.233481838e-6
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.
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.
Quick Reference Table
| Acre-Feet (ac ft) | Cubic Kilometers (km³) |
|---|---|
| 1 ac ft | 1.233 × 10-6 km³ |
| 2 ac ft | 2.467 × 10-6 km³ |
| 5 ac ft | 6.167 × 10-6 km³ |
| 10 ac ft | 1.233 × 10-5 km³ |
| 25 ac ft | 3.084 × 10-5 km³ |
| 50 ac ft | 6.167 × 10-5 km³ |
| 100 ac ft | 0.000123348 km³ |