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FEATHER to CSV converter, without the upload.

Turn FEATHER datasets into CSV. It is converted in your browser, so the file never leaves your device.

Drop FEATHER files here

or choose from your computer paste with Ctrl V

Ready · other file types work too0 bytes uploaded, ever

Convert to

How to convert FEATHER to CSV

  1. Add your FEATHER datasets

    Drop FEATHER files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.

  2. CSV is already chosen

    Press Convert. There is nothing else to set. The work happens in this tab.

  3. Download

    Save the CSV, or download everything as one ZIP if you converted several files.

Why ToAny

  • Private by construction

    The FEATHER to CSV converter is part of this page and runs inside your browser. Your datasets are never sent to ToAny or to anyone else.

  • No upload, no queue

    Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.

  • Free, without an account

    No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.

FEATHER to CSV: what to expect

Feather is binary, and spreadsheet programs cannot open it. CSV is plain text that every spreadsheet, database and script can read. FEATHER is at home in quickly saving a data frame between Python and R sessions; CSV is the usual choice for moving tabular data between systems.

Arrow IPC files and Feather version 2 files are read, including LZ4 and Zstandard compressed ones. The older Feather version 1 layout is refused with a message saying so.

FEATHER vs CSV

FEATHER

Feather table

Feather was created to exchange data frames between Python and R quickly. Version 2 is the Apache Arrow file format with a different name, version 1 an earlier, simpler layout. It stores column types exactly and reads much faster than CSV.

Opens in pandas, R and other analytics tools; not Excel

FEATHER converter
CSV

CSV spreadsheet

CSV is a table written as text: one row per line, values separated by commas. Every spreadsheet and database can import and export it, but it holds one sheet only and no formatting, formulas or data types.

Opens in Excel, Google Sheets, Numbers, databases and any text editor

CSV converter
FEATHER compared with CSV
FEATHERFeather tableCSVCSV spreadsheet
Stands forFeatherComma-Separated Values
TypeColumnar data filePlain-text table
CompressionNone by default (LZ4 or Zstandard in version 2)None
Introduced2016, by Wes McKinney and Hadley WickhamThe 1970s, by no single author (described in RFC 4180)
Opens inpandas, R and other analytics tools; not ExcelExcel, Google Sheets, Numbers, databases and any text editor
Best forQuickly saving a data frame between Python and R sessionsMoving tabular data between systems
File extension.feather.csv

Questions

Are my datasets uploaded anywhere?

No. The FEATHER to CSV conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.

Is anything lost when converting FEATHER to CSV?

The values are kept. Anything CSV has no way to express, such as formatting, formulas or nesting, is simplified or left out.

Can I convert several FEATHER files at once?

Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.

How do I convert FEATHER to CSV on Windows, Mac, iPhone or Android?

The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the FEATHER file, press Convert and save the CSV. There is nothing to install.

Is there a file size limit?

Yes. Binary data files up to 150 MB are accepted; a larger file is refused with a message. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.