CSV to JSON
CSV を browser で JSON に convert
🔒 Files never leave your device
使い方
- 1Upload or paste CSV
Drop a .csv file or paste rows.
- 2Preview
See the parsed JSON output.
- 3Download
Save the .json file.
CSV to JSON について
CSV を parse して構造化された JSON を download。Export 前に preview 可能。
仕事、勉強、個人利用 — この tool は必要なだけ無料で使えます。Watermark なし、sign-up なし、documents 内の広告もなし。
よくある質問
Is the first row treated as headers?
Yes. Uncheck the option if your CSV has no header row.
続きを読む
XLS to XLSX: why your old Excel files break in modern tools (and how to fix them)
You inherit a shared drive full of .xls files from 2008. Half of them refuse to open in Excel 365 or Google Sheets. Here's what changed, and how to convert them without losing formulas.
CSV to JSON: nested arrays, typed fields, and mapping real-world data
Converting a flat CSV to a flat JSON array is trivial. Doing it so an API actually accepts the result - with typed numbers, nested objects, and normalized keys - takes a bit more thought.
CSV vs JSON vs Excel: which data format should you use when?
Three formats, three use cases, endless confusion. A practical guide to picking the right one for spreadsheets, APIs, and everything in between.