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Your data stays on your device and is never sent to our servers.
Switch easily between tabular CSV data and JSON structure, then retrieve the converted result ready to copy or download.
Unable to convert this data.
Convert tabular data between CSV and JSON without uploading it. The result is generated directly in your browser.
Your data stays on your device and is never sent to our servers.
Clean, structure, and transform your data with rules tailored to the format being processed.
CSV, XLSX, and other tabular formats depending on each tool’s capabilities.
Get a clean, ready-to-use result in seconds without installing software or configuring a complex workflow.
Fonctionnement
CSV ↔ JSON converter processes your data directly in the browser using the logic specific to this tool. Switch easily between tabular CSV data and JSON structure, then retrieve the converted result ready to copy or download. Start by entering the required values or content, then adjust the available options before reviewing the result. The workflow is designed to stay clear and repeatable: changes to the inputs are handled by the relevant engine so you can check the output quickly before copying, downloading, or reusing it in another step of your work.
Use CSV ↔ JSON converter to complete a common task quickly without installing additional software or preparing a complicated manual process.
Use CSV ↔ JSON converter to check a value or transformation produced elsewhere and identify an input or method mistake more easily before relying on it.
Include CSV ↔ JSON converter in a browser-based workflow when you want a simple, repeatable process that keeps processing as local as the tool allows.
Guide
Add valid CSV or JSON to the input area.
Select CSV to JSON or JSON to CSV.
Review the preview and retrieve the converted data.
The converter detects or applies the delimiter selected in the interface, such as comma or semicolon.
No. Processing happens locally in your browser.
Yes. The tool is free and requires no account.
Understand delimiters, encodings, types, nested JSON and spreadsheet features before converting data between CSV, Excel, JSON and TSV.
Learn how tabular data is structured, how CSV, Excel, JSON and TSV differ, and how to choose the right format before cleaning, converting or automating a workflow.
Put cleaning, validation, filtering, merging, comparison and conversion in a sensible order, and learn when a reusable pipeline is better than isolated tools.
Learn how to compare two versions of a table using a stable key and distinguish added, removed and modified records.
Recommended workflow
Discover tools that naturally fit before, after, or alongside this one.
Convert Excel, CSV, and other spreadsheet formats directly in your browser.
Format, minify, and validate JSON to make it easier to read or more compact.
Remove duplicates, empty rows and unnecessary spaces.
Remove duplicates, empty rows and unnecessary spaces.
Format, minify, and validate JSON to make it easier to read or more compact.