- 1Upload
- 2Process
- 3Download
CSV to JSON online, free
CSV rows to a JSON array of objects.
- Runs in your browser — no upload
- Free, no sign-up, no watermark
- CSV
- TXT
How to use CSV to JSON
- 1
Add your CSV and TXT file
Drop a file on the page, paste it, or click Select Files. Nothing is uploaded — it opens straight in your browser.
- 2
Fine-tune the settings
Set delimiter in the Fine-tune panel, or keep the defaults — they suit most files.
- 3
Run CSV to JSON
Press the start button. Processing happens on your device, usually in seconds.
- 4
Download the result
Save the finished file, or continue with another tool without downloading in between.
What CSV to JSON can do
- Delimiter: auto, ,, ; and
- Private by design — files are processed in your browser and never uploaded
- Free with no sign-up, no watermark and no daily limit
CSV to JSON — frequently asked questions
Is CSV to JSON really free?
Yes. CSV to JSON is free forever on Sada Files — no ads, no premium tier, no watermark, no daily cap that pushes you to pay. Every option on this page is available to everyone.
Do I need to sign up or create an account?
No. There is no account system at Sada Files. Open the page, drop your file, pick your options and save the result. History and saved workflows stay on your device.
Is my file uploaded anywhere?
No. CSV to JSON runs on your device — in your browser using WebAssembly, or inside the free native app. Your file never leaves your computer or phone, which is why there is no upload wait.
Which formats does CSV to JSON accept?
CSV to JSON accepts CSV and TXT. Files are identified by their content, not their extension, so a mislabelled file still works.
Is there a file size or file count limit?
Only what your device can handle. Because processing happens locally there is no server cap, no queue and no "upgrade for larger files" message.
Can I chain CSV to JSON with other tools?
Yes. After every result a Continue with… menu lists every tool that accepts this output, and the file is handed over in memory. Save the chain as a workflow and re-run it on hundreds of files, or call it in one API request.
Does CSV to JSON work on my phone?
Yes. The web app works on Android and iOS browsers, and the free Sada Files app for Android, iOS, Windows, Linux and macOS runs CSV to JSON fully offline.
Related tools
- JSON to CSVFlatten JSON objects into CSV columns.
- Convert Data FileConvert between CSV, TSV, JSON, NDJSON, YAML, XML, TOML and Excel — nested data kept.
- CSV CleanerTrim whitespace, fix delimiters and encodings, drop empty rows and duplicates.
- JSON Formatter & ValidatorPretty-print, minify, validate and sort keys.

