Provided are toner for developing an electrostatic latent image and a method of preparing the same. The toner has G'(60) of about 4.0.times.10.sup.7 Pa to about 4.0.times.10.sup.8 Pa, G'(60)/G'(80) of about 100 to about 500, and G'(100, 140) of about 3.0.times.10.sup.3 Pa to about 1.5.times.10.sup.5 Pa. The G'(60) and G'(80) are storage moduli Pa at about 60.degree. C. and about 80.degree. C. under measurement conditions of an angular velocity of about 6.28 rad/s and a heating rate of about 2.0.degree. C./minute, respectively. The G'(100, 140) is a storage modulus Pa at a temperature of about 100.degree. C. to about 140.degree. C. under measurement conditions of an angular velocity of about 6.28 rad/s and a heating rate of about 2.0.degree. C./minute.