Monu Tools

Flat File to CSV Converter

Convert a fixed-width or space-aligned flat file into CSV. Columns split on runs of two or more spaces. Runs in your browser.

Reverse: CSV → flat file

How to use the Flat file → CSV

  1. 01

    Paste your flat file into the left panel.

  2. 02

    Choose the delimiter for the CSV output (comma, semicolon, tab or pipe).

  3. 03

    Copy the CSV result from the right panel.

What it does

This tool reads a space-aligned flat file and writes CSV, splitting each line where two or more spaces (or a tab) separate the columns.

It is the quickest way to get a copied console table or a legacy report into a spreadsheet.

Private and unlimited

Every conversion happens locally in your browser, so your data is never uploaded, logged or stored on a server. You can use it on confidential exports without a second thought, and it keeps working offline once the page has loaded.

There is no sign-up, no watermark and no row limit: the only ceiling is your device's memory.

Frequently asked questions

Which delimiter should I use?

Comma is the standard. Pick semicolon in regions where the comma is the decimal separator (common in German and other European exports), tab for TSV files, or pipe when your values already contain commas.

Is there a row or file-size limit?

There is no fixed row cap or daily quota. Because everything runs locally the practical limit is your device's memory, which comfortably handles the tens of thousands of rows most exports contain.

Is my data uploaded anywhere?

No. The conversion runs entirely in your browser with client-side JavaScript, so nothing you paste or drop ever leaves your device. That makes it safe for spreadsheets that contain customer emails, financial figures or other sensitive data.

Sources

Embed this tool

Add this tool to your own website. Copy the snippet below; it stays up to date automatically.

<iframe src="https://monu.tools/embed/en/flat-file-to-csv" width="100%" height="640" style="border:1px solid #e5e5e5;border-radius:12px;max-width:680px" loading="lazy" title="Monu Tools"></iframe>

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