Avro to CSV Converter Convert an Avro file to CSV online. Nested records are flattened. Free, private, runs in your browser.
Quick answer: Convert JSON, CSV, Parquet and Excel – one file or a whole folder.
Related: JSON, CSV, Parquet and Excel Converter · Avro Viewer Online: Open .avro Files · CSV to Avro Converter · Avro to JSON Converter · CSV Guides and Free CSV Tools
How to use the Avro to CSV Converter Convert JSON, CSV, Parquet and Excel – one file or a whole folder.
The Format Converter moves data between JSON, CSV, Parquet and Excel without code or an install. It reads your file in the browser, flattens nested JSON into columns, keeps or guesses column types, and writes the format you choose. Use it to open API data in Excel, load a spreadsheet into an app, shrink a big CSV into Parquet, or look inside a Parquet file. Nothing is uploaded, so it is safe for customer and business data.
Pick From and To Drop or paste your data Convert and download Tips Use the Batch / Folder tab to convert many files into one ZIP. Nested JSON becomes columns like address.city. Excel: the first sheet is read; old .xls files are not supported. Example Input: events.avro
Output: events.csv
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Frequently asked questions How do I open an Avro file without code? Drop the .avro file into the converter. It reads the embedded schema and shows every record as a table you can download as CSV, JSON, Excel or Parquet. No Java, Python or avro-tools needed.
Which Avro codecs are supported? Files with no compression (null) or deflate. Nested records, arrays, maps, enums, unions and date or timestamp logical types are read too.
How big can a file be? It depends on your device. A few hundred MB usually works.
Which conversions does the Format Converter support? Any direction between JSON, CSV, Parquet and Excel (.xlsx), for one file or a whole folder. Nested JSON is flattened into columns such as address.city. For Excel, the first sheet is read; old .xls files are not supported.
Why did my number or date change after converting? Types are detected from the values. Turn off "Detect types" to keep everything as text, which also keeps leading zeros in IDs and phone numbers.
Related pages JSON, CSV, Parquet and Excel Converter : Convert between JSON, CSV, Parquet and Excel online for free, one file or a whole folder. It runs in your browser, so nothing is uploaded.Avro Viewer Online: Open .avro Files : Open and view an Avro (.avro) file online: see the schema and records as a table, then save as CSV, JSON, Excel or Parquet. Free, no upload.CSV to Avro Converter : Convert CSV to an Avro (.avro) file online. Column types are detected and written into the Avro schema. Free and private: nothing is uploaded.Avro to JSON Converter : Convert an Avro file to JSON online. Nested records, arrays and maps stay nested. Free, private, no upload.JSON to Avro Converter : Convert JSON to an Avro (.avro) file online. The schema is built from your data. Free, private, no upload.Avro to Parquet Converter : Convert Avro to Parquet online for faster analytics in Spark, DuckDB or BigQuery. Free, private, runs in your browser.Avro to Excel Converter : Convert an Avro file to Excel (.xlsx) online so anyone can open it. Free, private, no upload.JSON to CSV Converter : Convert JSON to CSV in seconds. Drop a file or paste data and download the result. Private: it runs in your browser and nothing is uploaded. 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