A design support apparatus includes: an input unit that receives shoe last data; a processor (computing unit) that computes a cutting pattern of a sheet based on the shoe last data received by the input unit; and an output unit that outputs the cutting pattern of the sheet computed by the processor. The processor calculates an amount of correction in consideration of a shrinkage direction and a shrinkage coefficient of the sheet, and calculates the cutting pattern of the sheet by developing, on a plane, three-dimensional shape data that conforms to a dimension of the shoe last data, to thereby obtain a shape pattern of an upper, and incorporating the calculated amount of correction into the shape pattern of the upper.