Convert an Array of Arrays to CSV

Convert an Array of Arrays to CSV with live preview. Transform JavaScript-style arrays into clean CSV output, with trim and formatting options built in.

Paste your input above or import a file below.
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Supported file types: .txt, .csv, .json, .log, .js
Total characters: 0
Options
Trim fields
Remove brackets/quotes
Maximize output

How to Use:

  • Paste your [[...],[...]] formatted array into the Array of Arrays Input box or upload a file using Choose File. Supported types include .txt, .csv, .json, .log, and .js.
  • Enable Trim fields to remove extra spaces around each item.
  • Use Remove brackets/quotes to strip away quotes and output plain values (unquoted and unescaped).
  • Turn on Maximize output to expand the result area for easier review.
  • The CSV Output updates live and flashes when changes are made.
  • Click Copy Output to copy the CSV to clipboard or Export to File to download it.
  • A Total characters counter appears below the output.
  • Press Clear All to reset all text, file inputs, and options.

What Convert an Array of Arrays to CSV can do:

This tool converts a JavaScript-style array of arrays into a properly formatted CSV file. It’s perfect for turning structured arrays like [[1,2,3],[4,5,6]] into clean, spreadsheet-ready output. Whether you’re working with JSON, exporting from code, or cleaning up test data, the conversion is fast, accurate, and all done in-browser.

Example:

Input:

[["Name","Age","City"],["Alice",30,"New York"],["Bob",27,"London"]]

Output (default):

"Name","Age","City"  
"Alice",30,"New York"  
"Bob",27,"London"

With Remove brackets/quotes enabled:

Name,Age,City  
Alice,30,New York  
Bob,27,London

Common Use Cases:

Use Convert an Array of Arrays to CSV to process test data, export JSON for Excel, convert script output to spreadsheets, or generate CSV from in-browser code. It’s great for developers, analysts, or anyone working with structured JavaScript data.

Useful Tools & Suggestions:

If you’re starting from raw JSON, Convert JSON to CSV might save you a step before messing with arrays. And once you’ve got your CSV, Convert CSV to Text Columns can help line things up cleanly for easier reading or editing.

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