テキスト → CSV ファイル オンラインコンバーター
テキストからオンラインでCSVファイルを作成。行を貼り付けるかファイルをドロップし、テーブルをプレビューして完成した.csvをダウンロード — 無料、ブラウザベース、プライベートで、アカウント不要。
データのライブテーブルプレビューがここに表示されます。
Paste or upload above and download a finished .csv file — all online, all private.
Convert text to a CSV file online
This tool is for when you want the file, online: paste or upload text and download a ready .csv without installing anything. It combines fast in-browser conversion with a clean file download in one place.
Paste a list or rows, or drag in a text file. The converter detects the delimiter, shows a live table so you can confirm the columns, and produces a standard CSV file that opens in Excel, Sheets and database tools. Nothing is uploaded.
Want the upload-only TXT workflow? Use online TXT to CSV. Looking for the “how to make a CSV file” walkthrough? See convert text into CSV file.
How to use it
貼り付けまたはアップロード
Add your text or drop a file — it is read locally in your browser, never uploaded.
Preview & adjust
Check the live table and the row / column counts, then tweak the delimiter or options if a column looks off.
Copy or download
Grab the result with Copy or Download. You can reopen recent conversions from this device too.
Input and output example
Paste or upload text online and download a ready-made CSV file.
name email
Ada [email protected]
Lin [email protected]name,email
Ada,[email protected]
Lin,[email protected]Paste, preview, download
テキストからCSVファイルへのシンプルなオンラインルート。
Paste or drag in your text
Use the clipboard for a quick list, or drop a text file to convert its contents. Both feed the same live preview, so you immediately see how the data will be structured.
Confirm the columns
Auto-detect chooses the separator and the table preview shows the result, including a warning if any row has a different number of columns. Adjust the delimiter or header before downloading.
Excel-safe options
Enable UTF-8 BOM for correct encoding in Excel, and Excel-safe numbers to keep leading zeros and long IDs intact in the saved file.
Download the file
Click Download to save a standard .csv. Because everything is local, the file is created on your device and can be shared like any other.
From clipboard to a shareable file
There is a meaningful difference between seeing a converted result on screen and holding a file you can save, attach and reuse. This page is built around that last step: it takes whatever text you paste or drop and produces a standard .csv that behaves like any other document. Because it opens in Excel, Google Sheets, Numbers and database import tools, a single conversion can feed a spreadsheet, a report and a data load without further fiddling. The settings that make the file dependable are the same ones worth checking every time — confirm the delimiter so columns split correctly, keep a header row if your first line names the fields, and switch on Excel-safe numbers when the data includes leading zeros or long identifiers. With those in place, you get a clean, portable CSV created entirely on your own device.
Text to CSV File Online Converter — FAQ
How do I get a CSV file online?
Paste or upload your text, confirm the columns in the preview, keep the output on CSV, and click Download.
Do I need an account?
No. It is free with no sign-up.
Is my text uploaded?
No. The CSV file is built in your browser; your text never leaves your device.
Will the file open in Excel?
Yes. Use UTF-8 BOM and Excel-safe numbers for the cleanest result.