Your files stay on your device

CSV studio

Sniff the delimiter, quote style, and line endings; profile every column (types, empties, distincts, formula-looking cells); and convert between CSV, TSV, JSON, JSONL, Markdown, and HTML tables with the spreadsheet-formula guard on.
no input yetDelimiterCopyDownloadCSV textJSONJSONLMarkdownHTML tableCSVTSVInfer types (numbers / booleans)Profile + convertNothing in yet

Paste, drop, or type to begin. Everything stays on this device.

sniff → profile → convert

Next door in Config

- JSONL / NDJSON (/json/jsonl)
- CSV → SQL (/config/csv-to-sql)
- Markdown table (/text/markdown-table)
All config tools (/config)

Canonical HTML: https://nutter.tools/config/csv
Markdown version: https://nutter.tools/config/csv/index.md
Plain-text version: https://nutter.tools/config/csv/index.txt
Agent index: https://nutter.tools/llms.txt