Convert Base64 to CSV

Convert Base64 to CSV decodes Base64-encoded CSV strings into readable, exportable data. Paste, preview, and download your CSV instantly in the browser.

Paste your Base64 string above or import a file below.
No file chosen
Supported file types: .txt, .b64, .csv, .log
Total characters: 0

How to Use:

  • Paste your Base64-encoded CSV into the input box or upload a .b64, .txt, .csv, or .log file using the Choose File button.
  • As soon as you input the text or upload a file, the tool decodes the Base64 string into plain CSV.
  • The output updates automatically and flashes blue every time it changes.
  • Click Copy Output to copy the decoded CSV to your clipboard.
  • Select Export to File to download the result as a .csv.
  • Hit Clear All to reset everything including input, output, file name, and the character counter.
  • The Total characters counter below the output shows the length of your decoded CSV in real time.

What Convert Base64 to CSV can do:

Convert Base64 to CSV helps you quickly recover CSV data that’s been encoded for email, web APIs, or data storage. Whether the Base64 came from a client app, a data dump, or an embedded field, this tool turns it back into usable, line-by-line CSV. You can preview it, edit it, copy it, or download it all without uploading anything to a server. It works instantly, privately, and in-browser.

Example:

Base64 Input:

bmFtZSxhZ2UsZW1haWwKQWxpY2UsMzAsYWxpY2VAZXhhbXBsZS5jb20KQm9iLDI1LGJvYkBleGFtcGxlLmNvbQo=

Decoded CSV Output:

name,age,email
Alice,30,[email protected]
Bob,25,[email protected]

Common Use Cases:

Use Convert Base64 to CSV when you receive encoded CSV from APIs, download tools, email attachments, or when reverse-engineering embedded data. It’s ideal for developers, analysts, and anyone dealing with Base64-wrapped exports.

Useful Tools & Suggestions:

Before decoding, Analyze CSV can help confirm if your Base64 string actually wraps CSV content. And once converted, run Validate CSV to make sure the structure came through intact.

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