A pattern evaluation method includes: generating first array data from edge data on a pattern to be evaluated, the edge data on the pattern to be evaluated being shape data including edge points of the pattern to be evaluated; generating second array data from edge data on a reference pattern, the edge data on the reference pattern including edge points of the reference pattern which serves as an inspection standard of the pattern to be evaluated; subjecting each component of the second array data to array conversion processing, the array conversion processing being designed to convert a value of the component of the second array data into a function value of a value of a distance from that component to the edge point closest thereto, thereby generating third array data; executing arithmetic processing between the first array data and the third array data to generate fourth array data; and using a component of the fourth array data to calculate a numerical value representative of an relation between the pattern to be evaluated and the reference pattern.