Per person, a vegan diet saves:
1.9 acres of grassland used for grazing cattle
calculation: 613.7 million acres of “Grassland pasture and range” used for cattle, divided by 322 million persons in the U.S.
sources: USDA ERS Major Land Uses; Census.gov
917 lbs of corn per year (2.5 lbs/day)
calculation: 5.275 billion bushels of corn times 56 lbs/bushel divided by 322 million persons for the per year value, divide by 365 for per day.
sources: USDA ERS Domestic Corn Use Table
167 lbs of soybeans per year (0.46 lbs/day)
calculation: 1795 million bushels (soybean crush) times 60 lbs/bushel divided by 2 (crushing industry produces food oil and feed) for the per year value, divide by 365 for per day.
sources: USDA ERS Oil Crops Yearbook Table 3–Soybeans