is acres a measurement in the si system
(Redirected from Hectares) The hectare (/ËhÉktÉÉr/ or /ËhÉktÉËr/; symbol ha) is an SI accepted metric system unit of area equal to 100 ares (10,000 m2) and primarily used in the measurement of land as a metric replacement for the imperial acre. An acre is about 0.405 hectare and one hectare contains about 2.47 acres.