TTable to Sheets

CSV to JSON converter

Paste your CSV below and get formatted JSON. Everything runs in your browser — your data is never uploaded.

Free, no sign-up, no upload — this tool runs entirely in your browser.

How to convert CSV to JSON

  1. Paste your CSV into the left box (or type it).
  2. Choose whether the first row is a header — if it is, each row becomes an object keyed by your column names.
  3. Click Convert to JSON, then copy the result or download it as a .json file.

Tick Clean numbers if your data came from a web page and carries footnote markers like [1], thousands separators, or currency symbols — that option strips them so values parse as real numbers.

Is my data safe?

Yes. This converter is pure JavaScript running in your own browser. Nothing is uploaded, stored, or logged — you can even disconnect from the internet after the page loads and it still works.

Working with tables from web pages?

If your CSV came from copying a table off a website, you can skip the copy-paste entirely.

Related free tools

CSV cleanerClean messy CSV copied from the web: strip footnote markers like [1], remove thousands separators and currency symbols, trim whitespace, drop empty rows.CSV to Markdown tablePaste CSV and get a formatted Markdown table for GitHub, Notion, Obsidian or docs. Free, no sign-up, runs entirely in your browser.CSV viewerOpen a CSV file and view it as a clean, sortable table right in your browser. Nothing is uploaded — no Excel, no sign-up, no waiting.

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Get Table to Sheets — free

Export any table on any web page to a clean CSV in one click. Free and unlimited — no row caps. One click to Google Sheets with Pro.

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