A library that provides the ability to import/export Realm files from a variety of data container formats.
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Latest commit abd771e Oct 4, 2017


Realm Converter

Realm Converter is an open source software utility framework to make it easier to get data both in and out of Realm. It has been built in Swift, but can also be easily utilized in Objective-C projects.

It is still in heavy development, with refinements and new formats being added to it over time.

Technical Requirements

OS X 10.9 and above.


Schema Generator

  • Provides an interface to analyze the intended files to import and produce a compatible schema set that can be used to generate the Realm file


  • Imports from CSV, XLSX and JSON.


  • Exports a Realm file to CSV.


Using Swift's Objective-C bridging, it's possible to use Realm Converter in Objective-C as well; and all classes on the Objective-C side are pre-fixed with RLM.

Exporting a Realm file to CSV

let realmFilePath = '' // Absolute file path to my Realm file
let outputFolderPath = '' // Absolute path to the folder which will hold the CSV files

let csvDataExporter = try! CSVDataExporter(realmFilePath: realmFilePath)
try! csvDataExporter.export(toFolderAtPath: outputFolderPath)

Generate a Realm file from CSV

var filePaths = [String]() // Array of file paths to each CSV file to include
let destinationRealmPath = '' // Path to the folder that will hold this Realm file

// Analyze the files and produce a Realm-compatible schema
let generator =  ImportSchemaGenerator(files: filePaths)
let schema = try! generator.generate()

// Use the schema and files to create the Realm file, and import the data
let dataImporter = CSVDataImporter(files: filePaths)
try! dataImporter.import(toPath: destinationRealmPath, schema: schema)


Realm Converter is licensed under the Apache license. See the LICENSE file for details.