This document analyzes the relationship between farm size and household welfare and food security in Ethiopia using data from 7,000 households. It finds that while large farms have much higher crop production incomes, there are only small differences in welfare and food security outcomes across farm sizes. Small farms achieve food security through strategies like renting additional land, intensifying crop production, growing calorie-dense crops, earning non-farm income, and consuming cheaper foods. The conclusions are that well-functioning land rental markets, a strong off-farm job sector, and technologies to intensify crop production on existing land are important for ensuring food security for smallholder farms.