Full name: milliacre
Plural form: milliacres
Category type: area
Scale factor: 4.0468564224
The SI derived unit for area is the square meter.
1 square meter is equal to 0.24710538146717 milliacre.
Valid units must be of the area type.
You can use this form to select from known units:
The SI prefix "milli" represents a factor of 10-3, or in exponential notation, 1E-3.
So 1 milliacre = 10-3 acres.
The definition of a acre is as follows:
An acre is a measure of land area in Imperial units or U.S. customary units. It is equal to 43 560 square feet, 4840 square yards, or 160 square rods. The precise meaning of this depends on the exact definition adopted for a foot: the international acre is 4 046.856 422 4 m² (for the UK, see). For measurements based specifically on the US survey foot the US survey acre is ca. 4 046.872 610 m².