An external additive for toner includes a particulate obtained from a silicone compound selected from a silane compound represented by Chemical Formula 1, Si(OR1)4, wherein each R1 is independently a C1 to C6 monovalent hydrocarbon group, a hydrolysis-condensation product of the silane compound, and a combination thereof, wherein the particulate has an average particle diameter ranging from about 50 nm to about 250 nm and a true density ranging from about 1.80 g/cm3 to about 2.00 g/cm3.