PURPOSES : This study presents a formula for calculating the parking capacity of shared e-scooter parking spaces using the dimensions of the clearance spaces of sidewalks. The details are as follows: First, the discontinuity angle of the parking unit placement is derived. Second, the parameters of the sidewalk clearance lengths are derived. Third, a formula for calculating the parking capacity of shared e-scooter parking spaces is derived. Finally, we examine the applicability of the parking capacity calculation formula to actual sidewalk clearance spaces. METHODS : Based on literature reviews, a formula for the discontinuity angle of parking unit placement was derived using the sidewalk clearance widths and the geometric structure of parking units. Formulas for the parameters of the sidewalk clearance lengths were derived using the sidewalk clearance lengths and the geometric structure of the parking units. A formula for parking capacity calculation was derived using the formula for the parameters of the sidewalk clearance lengths and the discontinuity angle. Examples of the application of the parking capacity calculation formula to actual sidewalk clearance spaces are presented. RESULTS : The results of this study are listed as follows: The discontinuity angle for the placement of standard shared e-scooter parking units was derived. Additionally, a formula for the sidewalk clearance lengths was derived. Moreover, a formula for calculating the parking capacity of shared e-scooter parking spaces based on sidewalk clearance lengths and widths was derived. Finally, examples of the application of the parking capacity calculation formula to actual sidewalk clearance spaces are presented. CONCLUSIONS : A formula for calculation of the parking capacity of shared e-scooter parking spaces using the dimensions of the clearance space of sidewalks was derived and proposed. The parking capacity calculation formula presented in this study can contribute to the design of parking spaces to accommodate dockless shared e-scooters on sidewalks. Furthermore, it can also contribute to accommodating other types of dockless mobility. Future research can focus on designing parking spaces that consider the parking demands for shared e-scooters.