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Spreadsheet converters

Convert CSV to JSON

Turn CSV files into JSON. Spreadsheets often hold private data, so it never leaves your device.

Drop CSV files here, or click to choose

Up to 3 files, 50.0 MB each · Files stay on your device

How it works

How to use the CSV to JSON converter

  1. Drop your CSV files into the box.
  2. Choose which sheets to include, if asked.
  3. Click Convert and download the JSON.

Formats

About the formats

CSV file
CSV is plain text with one row per line and values separated by commas. Every spreadsheet and database can import it.
JSON data
JSON is the standard data format of the web and APIs.

FAQ

Frequently asked questions

Are my files uploaded?

No. The conversion runs inside your browser using WebAssembly, so your files never leave your device. Nothing is sent to our servers.

What about formulas and formatting?

Values are converted. Formulas are exported as their calculated results; cell colours and charts aren't kept in CSV, JSON or Markdown.

Is it free?

Yes. The free plan converts up to 3 files at a time, up to 50 MB each. Note05 Pro ($5/month) removes ads and raises the limits to 100 files and 2 GB per file.

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