How to open a .torrent file
BitTorrent metainfo file · Network / metadata
A .torrent file contains no content of its own. It is a small index of what to download and where to find peers, and it needs a BitTorrent client such as qBittorrent or Transmission.
What a .torrent file actually is
A .torrent holds file names, sizes, cryptographic hashes of each piece, and tracker addresses. It is typically a few kilobytes regardless of whether it points at one document or a terabyte of data.
Those piece hashes are the interesting part: the client verifies every block against them as it arrives, so corrupted or tampered pieces are detected and re-fetched automatically.
Why it will not open
Nothing is associated with .torrent until you install a client. Opening it in a text editor shows a short blob of bencoded data because there is nothing else in the file to see.
Step by step
Windows
- 01Install a BitTorrent client. qBittorrent is free, open source and has no advertising.
- 02Double-click the .torrent file. The client opens and asks where to save.
- 03Choose a destination and start. Progress and peers appear in the client.
macOS
- 01Install Transmission, the standard lightweight macOS client.
- 02Double-click the .torrent file and confirm the download location.
What usually goes wrong
A magnet link does the same job without a file
Magnet links start with "magnet:?" and carry the same identifying hash inside a URL, so no .torrent file is needed. Clicking one hands it straight to your client.
The protocol is legal, the content may not be
BitTorrent is used to distribute Linux distributions, game patches and scientific datasets. It is also used to share copyrighted material, which is unlawful in most jurisdictions and visible to your ISP because peers exchange IP addresses by design.
Programs that open .torrent
Our pick, in order. Every one links to the publisher's official download URL and the SHA-256 hash of the installer, so you can check the file before you run it.
- qBittorrentFree and reliable P2P Bittorent client.v5.2.3 · 1 hashed installer95
- TransmissionTransmission is a cross-platform BitTorrent clientv4.1.3 · 2 hashed installers95
- MotrixMotrix is a full-featured download manager that supports downloading HTTP, FTP, BitTorrent, Magnet, etc.v1.8.19 · 2 hashed installers83
Also registers .torrent in its manifest
Taken straight from publisher manifests. Some of these handle the format for a narrow purpose rather than as their main job.
Common questions
- What program opens a .torrent file?
- A BitTorrent client. qBittorrent is the usual recommendation on Windows and Linux because it is free, open source and ad-free; Transmission fills the same role on macOS.
- Why is my .torrent file only a few kilobytes?
- That is expected. The file is only an index of hashes and tracker addresses, not the content. The actual data is fetched from other peers once your client loads it.