inAccessMod is an R package that simplifies the process of downloading and preparing geospatial layers required for AccessMod, an official software from the World Health Organization (WHO) used to model physical accessibility to healthcare. The package makes it easy to prepare all necessary inputs by automating tasks such as data downloading, cropping, masking, projection, and resampling with easy-to-use functions. inAccessMod includes additional functions that help users modify inputs and perform complex analyses like merging sub-national travel scenarios. The package also facilitates handling of health facility data from The Health Resources and Services Availability Monitoring System (WHO/HeRAMS) (WHO, 2022), and performs specialized result assessments like ranking of health facilities based on their coverage.