A toner for developing an electrostatic image is disclosed. The arithmetic
average of shape coefficient SF-1 of the toner particles calculated by
Equation 1 is from 125 to 170 and a ratio of that to an arithmetic
average of the shape coefficient SF-2 of the toner particles calculated
by Equation 2, SF-1/SF-2, is from 1.10 to 1.52 and the ratio of the toner
particles having a circle corresponding diameter measured by a flow
particle image analyzer of from not less than 0.60 to less than 1.00
.mu.m is not more than 5.0% in number. The image forming methods
employing the toner are also disclosed.