Measure the width and length of the planned walkway in inches. If the walkway is curved measure the outside or longest side of the walkway. Multiply the length by the width to calculate the number of square inches of walkway. Add five percent to this amount to allow for waste, or ten percent if the walkway has multiple curves to allow for extra waste on cut pavers.
Measure the length and width of each paver. Multiply these two measurements to determine the coverage of each paver. If, for example, the paver is five inches long and three inches wide, each paver will cover fifteen square inches.
Divide the number of square inches of the total project, including the waste factor, by the number of square inches of coverage of each paver. This yields the number of pavers necessary for the project.