1 acre-foot = 43,560 cubic feet = 75,271,680 cu in 1 international acre-foot = 43,560 international cubic feet = 1,233.48183754752 m3 ≈ 271,328.072596 imp gal = 325,851 3⁄7 US gal 1 U.S. survey acre-foot = 43,560 U.S. survey cubic feet ≈ 1233.4892384681 m3 ≈ 271,329.700571 imp gal ≈ 325,853.383688 U.S. gal[nb 1]