Convert Acre-Feet to Imperial Gallons
Convert Acre-Feet (ac ft) to Imperial Gallons (UK gal) instantly and accurately.
Conversion Formula
UK gal = ac ft × 271328.0726
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 Imperial Gallons
A US imperial gallon (UK gal) = exactly 8 imperial pints or 10 lb of pure water at 62°F ≈ 4.546 L - about 20% larger than the US liquid gallon (3.785 L). The weight-based definition made it verifiable with simple scales. Still the legal fuel measure in the Cayman Islands and other British Overseas Territories. UK mpg ratings use imperial gallons: 50 UK mpg ≈ 42 US mpg. 1 UK gal ≈ 4.546 L.
Quick Reference Table
| Acre-Feet (ac ft) | Imperial Gallons (UK gal) |
|---|---|
| 1 ac ft | 271328 UK gal |
| 2 ac ft | 542656 UK gal |
| 5 ac ft | 1356640 UK gal |
| 10 ac ft | 2713280 UK gal |
| 25 ac ft | 6783200 UK gal |
| 50 ac ft | 13566400 UK gal |
| 100 ac ft | 27132800 UK gal |