DATA / PROCESSED LOCALLY

CSV to JSON

Turn spreadsheet exports into structured JSON.

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Input

0 charactersUTF-8 text

Processed locally · No uploads

How it works

Paste your content or open a supported local file.
Choose your settings, then preview or process it.
Copy or download the result. Clear your work when finished.

A few useful details

CSV needs a header row. CSV → JSON keeps values as strings to preserve IDs and leading zeroes. JSON → CSV accepts an array of records, serialises nested values, and prefixes formula-like cells for safer spreadsheet opening.

Inputs are limited to 1 MB; text comparison is limited to 100,000 characters per side. File contents are not saved between visits.