Command-line tool

nkf

brew/nkf

Checked 25 Oct 2026, 21:09 UTC · Listing refreshed from Homebrew, winget, npm, Scoop and cargo; npm packages checked against OSV.dev

Network Kanji code conversion Filter (NKF)

Website Source

At a glance

Type

Command-line tool

Install on

macOS, Linux

Last checked

25 Oct 2026, 21:09 UTC

Install it

macOS

brew install nkf

Linux

brew install nkf

Convert to UTF-8 encoding

nkf -w path/to/file.txt

Convert to SHIFT_JIS encoding

nkf -s path/to/file.txt

Convert to UTF-8 encoding and overwrite the file

nkf -w --overwrite path/to/file.txt

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