---
name: "nix3-hash"
section: "1"
platform: "linux"
package: "nix-bin"
version: "2.26.3+dfsg-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/nix3-hash"
---

# nix3-hash(1)

compute and convert cryptographic hashes

**Warning** \
 This program is **experimental** ⟨@docroot@/development/experimental-features.md#xp-feature-nix-command⟩ and its interface is subject to change.

## Name

`nix hash` - compute and convert cryptographic hashes

## Synopsis

`nix hash` \[*option*…\] *subcommand*

where *subcommand* is one of the following:

**Available commands:**

- •

  `nix hash file` ⟨./nix3-hash-file.md⟩ - print cryptographic hash of a regular file

- •

  `nix hash path` ⟨./nix3-hash-path.md⟩ - print cryptographic hash of the NAR serialisation of a path

- •

  `nix hash to-base16` ⟨./nix3-hash-to-base16.md⟩ - convert a hash to base-16 representation (deprecated, use `nix hash convert` instead)

- •

  `nix hash to-base32` ⟨./nix3-hash-to-base32.md⟩ - convert a hash to base-32 representation (deprecated, use `nix hash convert` instead)

- •

  `nix hash to-base64` ⟨./nix3-hash-to-base64.md⟩ - convert a hash to base-64 representation (deprecated, use `nix hash convert` instead)

- •

  `nix hash to-sri` ⟨./nix3-hash-to-sri.md⟩ - convert a hash to SRI representation (deprecated, use `nix hash convert` instead)

**:**

- •

  `nix hash convert` ⟨./nix3-hash-convert.md⟩ - convert between hash formats

## Options

### Logging-related options

- •

  `--debug` ⟨#opt-debug⟩

-

  Set the logging verbosity level to ‘debug’.

- •

  `--log-format` ⟨#opt-log-format⟩ *format*

-

  Set the format of log output; one of `raw`, `internal-json`, `bar` or `bar-with-logs`.

- •

  `--print-build-logs` ⟨#opt-print-build-logs⟩ / `-L`

-

  Print full build logs on standard error.

- •

  `--quiet` ⟨#opt-quiet⟩

-

  Decrease the logging verbosity level.

- •

  `--verbose` ⟨#opt-verbose⟩ / `-v`

-

  Increase the logging verbosity level.

### Miscellaneous global options

- •

  `--help` ⟨#opt-help⟩

-

  Show usage information.

- •

  `--offline` ⟨#opt-offline⟩

-

  Disable substituters and consider all previously downloaded files up-to-date.

- •

  `--option` ⟨#opt-option⟩ *name* *value*

-

  Set the Nix configuration setting *name* to *value* (overriding `nix.conf`).

- •

  `--refresh` ⟨#opt-refresh⟩

-

  Consider all previously downloaded files out-of-date.

- •

  `--version` ⟨#opt-version⟩

-

  Show version information.

  **Note**

  See `man nix.conf` ⟨@docroot@/command-ref/conf-file.md#command-line-flags⟩ for overriding configuration settings with command line flags.