Opening a 001 File

The 001 file type is primarily associated with 7-Zip.

001	File extension: 001
	File type:	multi-part archive volume

What is a 001 file?

001 files mostly belong to 7-Zip by Igor Pavlov. 001 is the filename extension of the first volume/chunk of a split, or multi-volume archive. A split archive is a single but very large ZIP or RAR file that has been split into smaller files called "chunks" or volumes that have ".0##" filename extension (where "##" represents two integers). The first volume of a split archive has 001 filename extension, the second has 002, the third; 003 etc. This format is often used to store or transfer RAW image files captured with high-end imaging devices. SwiftView, a TIFF, PCL, HPGL viewer and printer saves the first page of a multi-page (TIFF) image archive in a 001 file. Multimedia Fusion, a game development software saves its MFA project file backups in 001, 002 files depending on the number of backups created by a user. Superbase, a database software saves its database index files with 001 to 999 filename extension.
Files with the extension 001 are often also jpg images or pdf documents, but zip compressed archives or medical images such as DICOM are also common. Use the Online 001 File Viewer on this page to find out the file format being used, and to view your 001 file.

How do you open 001 files?

You need a suitable software like 7-Zip to open a 001 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your 001 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a 001 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online 001 File Viewer

Choose your .001 file to view this image

or drag and drop it here

Online File Viewer

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How to convert a 001 file to ZIP, RAR, 7Z, TAR, GZ, ...

If you want to convert or edit a 001 file, you can use our free Online 001 File Converter (powered by Convert.Guru):

To do this, click the button "Choose your .001 file to view this image" on this page.
After your file is opened in browser,
click "Save as..." in the menu.
Then select the file format (e.g. ZIP, RAR, 7Z, TAR, GZ, ...) you want.
Your file will be converted and downloaded.

Programs that open and convert 001 files:

7-Zip by Igor Pavlov
See the previous paragraphs to learn more about the main application. 001 files are often referred to as 7-Zip compresseds because this type of file is primarily created or used by this software.
001 File Joiner & Splitter (split archive volume) by WellTek
001 File Joiner & Splitter is a discontinued file compression software that allowed users to split large files into smaller chunks. The file to be split may be a large image, video, archive, executable etc. Small chunks of the split file are saved in 001, 002 etc. files. This file format is classified as Compressed.
Accounting (backup) by Sage
Accounting is a cloud-based finance management service available as a web app. It is specifically designed to meet the accounting needs of small and medium-sized businesses. Some backup files used by older, native versions of Accounting store backups in files with a sequence of 001 to 999 filename extensions. This file format is classified as Backup.
Citect SCADA (trend history) by AVEVA
Citect SCADA is a supervisory control, data acquisition, and industrial automation software. The trend history used by Citect SCADA is stored in a 001 file. This file format is classified as Data.
Cutkiller (first volume of a multi-part archive) by N2jf Team
Cutkiller is a discontinued program for splitting and merging large files. It could split and save large files exceeding a floppy disk's capacity across multiple disks. Small chunks created from a large file are saved in files with 001 to 999 filename extension depending on the number of parts. This file format is classified as Compressed.
Drivespace (virtual drive) by Microsoft
DriveSpace is a disk compression and data security software for DOS and classic Windows operating system. It stored virtualized disks in 001 files. DriveSpace has been discontinued. This file format is classified as System.
eFax (fax data) by eFax
eFax is an online fax service that allows users to transfer large files (up to 1GB) from phones, tablets, or computers to a fax machine. A fax document that is sent with eFax is saved in a 001 file. This file format is classified as Data. Related links: XnView
FreeBSD/NetBSD (FreeBSD/NetBSD package data) by The FreeBSD Project
FreeBSD and NetBSD are open-source, UNIX-like operating systems compatible with different platforms including desktops and servers. Certain FreeBSD and NetBSD packages may contain files that have 001 filename extension. These files may be the first volume of a multi-part archive. This file format is classified as Data.
Fresh Download (unfinished download chunk) by Freshdevices
Fresh Download is a download manager capable of downloading various file types using HTTP, FTP, and HTTPS protocols with up to 8 simultaneous connections. It may split an unfinished download into multiple parts with 001, 002 etc. filename extensions depending on the number of parts. This file format is classified as Data.
Genesis 2000 (data) by Genesis 2000
Genesis 2000 is an obsolete program that was previously used for loan origination and for other mortgage related services such as loan tracking. Some data used by Genesis 2000 are stored in 001 files. This file format is classified as Data.
Ghost (backup) by Broadcom
Ghost (later split into Ghost Solution Suite and SSR) is a disk cloning program with data backup and recovery utilities. It may split disk backups into small chunks saved in files with 001, 002, 003 etc. filename extensions depending on the number of chunks. This file format is classified as Data. Related links: Ghost Solution Suite
Ghost (disk image span) by Broadcom
Ghost is a disk backup and recovery program. Legacy DOS operating systems used Ghost to split disk images exceeding 2GB into multiple files (called "spans" or "segments"). The first span has GHO filename extension and the remainder have filename extensions beginning from 001 and ending in 999. This file format is classified as Compressed.
HJSplit (split file chunk) by Freebyte
HJSplit is a discontinued program for splitting and merging large files. It was available for DOS, Windows, and Amiga platforms. Files that have been split with HJSplit are saved in 001, 002, 003 etc. depending on the number of parts. This file format is classified as Data.
JT Fax (fax data) by Hayes
JT Fax were a series of data and fax modems manufactured by Hayes. The modem's software saved fax data in 001 files. This file format is classified as Data.
Linux (GNU/Linux package data) by Linux
Linux is a cross-platform operating system available for server, desktop, mobile, IoT, and automation platforms. Some GNU/Linux packages store data in files that have three-integer extensions such as 001, 002 etc. These files may be volumes of a multi-volume archive. Such volumes may be merged with the cat command. This file format is classified as Data.
Maritime Toolbar (electronic navigational chart catalog) by Oceanwise
Maritime Toolbar is a SIS WebMap and ArcMap extension used to create S-57 compliant Electronic Navigational Charts (ENCs) as well as maritime GIS data processing. An ENC created with Maritime Toolbar is a database of chart features. Its catalogs are stored in files with 001 to 999 filename extension. This file format is classified as GIS. Related links: ArcMap, Cadcorp SIS WebMap, NavPak Demo, Fugawi View ENC, Electronic Navigational Chart
PhotoImpact (TIFF image archive subfile (page)) by Corel
PhotoImpact is a discontinued raster/vector image editor for Windows operating system. It was compatible with various image formats including multi-page image archives or documents stored in TIFF format. The first page of a multi-page image archive is stored in a 001 file, the second; 002 and so on. This file format is classified as Raster Image. Related links: TIFF
SplitJoin (multi-part archive volume) by Angus Johnson
SplitJoin is a tiny Windows program used to split large files into smaller chunks that can be sent as email attachments, transferred to smaller storage devices, and/or merged back into a single file. The first volume of the split archive has 001 filename extension, the second has 002 etc. This file format is classified as Compressed.
Superbase (database index) by Superbase
Superbase is an end-user database and Rapid Application Development software package. Database index files used by Superbase are stored in files with 001, 002, 003 etc. extensions so on depending on the number of index files. This file format is classified as Database.
SwiftView (TIFF image archive subfile (page)) by SwiftView
SwiftView is a program for searching, viewing, and printing documents saved in TIFF, PCL, or HPGL format. It uses an ASCII-based Imaging Command Set file to generate a single or multi-part printable document. SwiftView stores each page of a multi-page (TIFF) document in 001, 002, 003 etc. files. This file format is classified as Raster Image. Related links: SwiftView ICS Reference Manual, TIFF
Totem Cash (advertisement data) by Totem Cash
Totem Cash is an adult content advertising service that allows webmasters to earn commission when they display adverts of adult content on their sites. Various files found in Totem Cash's shared directory have 001, 002, 003 etc. filename extension. This file format is classified as Data.

001 file extension format:

Why is it important to know the file format? This is the only way to find out which program to use to open the file. The file format can be deduced from the file extension and the signature. Nonetheless, different programs can utilize the same file extension to represent distinct file formats. Double-clicking on the file often results in an error when opening. So you need a detailed analysis of a file to find out the format and the associated program. Our evaluation of the 001 files is as follows:

001 is one of the most common file extensions and includes very many different file formats. The file formats most commonly found in 001 files are:

20% of all 001 files are using the well-known 7z file format to store the data. 7z is a compressed archive file format that supports several different data compression, encryption and pre-processing algorithms. They consist of illegible, cryptic characters. The average file size is 690 MB with most files being between 10 MB and 2 GB in size. This file type is based on cutting-edge technology. Files like these have the following tags: mario, complete, mercedes, kart, super, rmce, split, better, galaxy, repack, noise, screw, rmge and this.
7% of all 001 files use the ZIP format, so several files are compressed and saved in one 001 file. A 001 file includes 1 to 4 files. If you want to see the included files and images, simply rename the file extension to .zip and double-click it. The files are 6 MB to 2 GB in size, with a median of 520 MB. Such files sometimes refer to adobe, hacked, laptop, illustrator, email and logic.

All other 001 files (73%) have different formats, such as Sage Backup, Norton Backup, Citect Trend History data, CP Backup saved data, RAR, TIFF, UTF-16 (LE), EXE, JPG, PDF, XML, File, NTFS, SIWA, FANUCROM and Record. The category is sage, accts, image, disk, data or limited. You can get all the details of your 001 file by dragging it onto this page or by clicking the button "Choose your .001 file to view this image" above.

Technical Data for 001 File Extension

File classification:

Compressed

Related files:

002, 003, kla, dim, tbk, sage, 0001, split, 000, rzr, 004, check, 005, tnt, zip, 7z, tsf, 900, 01, 010, z7, aip

Mime type:

application/octet-stream

a 001 multi-part archive volume is a special file format by Igor Pavlov and should only be edited and saved with the appropriate software.

How to solve problems with 001 files

Associate the 001 file extension with the correct application.
Update your software that should actually open multi-part archive volumes. Because only the current version supports the latest 001 file format. Search, therefore, e.g. on the Igor Pavlov manufacturer website after an available 7-Zip update.
To make sure that your 001 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .001 file online - secure, fast, and no downloads needed.