Background: The present study was conducted for evaluating stainless steel crown size selection prediction by digital radiographic primary molar measurements. Materials & methods: A total of 40 children within the age group of 4 years to 10 years were enrolled. Separate models using each, along with covariates of primary first versus primary second molars, maxillary versus mandibular molars, and their interaction, were developed using linear regression analysis, treating the final crown size as a continuous response. All the results were recorded and analysed using SPSS software. Results: After evaluating the final models utilizing stainless steel crown sizes of previously crowned teeth, it was observed that predictors and all covariates were significant These models were used to create size fitting guides. Conclusion: The crown fitting guide has favorable clinical potentialin selecting crown sizes. Key words: Stainless, Steel, Crown, Primary molar