sf in an acre
How Many Square Feet in an Acre. Now that we know a bit about acres and square feet, we can move to conversion of these units and find out how many square feet there are in an acre. One US customary acre is equivalent to 43 560 square feet, 4840 square yards, or about 4047 square meters. There are also some other types of acres, used in various countries: Irish acre (7843 yd2), Roman acre (1260 m2), Cheshire acre (10240 yd2), etc.