JapaneseTextTools – Free Online Tools for Japanese Text Conversion
Convert Japanese text easily and accurately - no installs, no sign-ups.
JapaneseTextTools is a free, browser-based collection of tools for converting, cleaning, and formatting Japanese text. Whether you're a developer, translator, or language learner, this site helps you handle common Japanese text problems quickly and reliably.
Features
- Romaji ↔ Hiragana ↔ Katakana Conversion - Instantly turn "arigatou" into ありがとう or アリガトウ - perfect for learners, translators, and software localization.
- Latin Letters → Katakana Spell-Outs - Convert "ABC" into エービーシー.
- Full-width ↔ Half-width Character Conversion - Fix character encoding issues and prevent layout or database problems.
- Japanese Input Field Simulator - Test text in maximum-length Japanese input fields to see how it behaves.
- Japanese Numerals ↔ Arabic Numerals - Seamlessly convert between Japanese (1万) and Arabic (10,000) numbers.
- Japanese Symbol Browser - Quick access to commonly used symbols like ★ ♪ 〒 for copy-paste convenience.
Why Use JapaneseTextTools?
Most online Japanese converters are unreliable, outdated, or filled with ads that get in your way. This site is:
- Fast and free - always available in your browser
- Completely client-side - your text never leaves your computer
- Trusted by developers, translators, and learners worldwide
No logins. No software installs. Just clean, accurate Japanese text conversion.
Try It Now
Use it free at japanesetexttools.com
Built on Open Source
JapaneseTextTools is powered by modern, open-source libraries that make reliable text processing possible:
- React – UI framework (MIT License)
- Astro – Static site generator (MIT License)
- WanaKana – Japanese kana conversion (MIT License)
- Tailwind CSS – Utility-first styling (MIT License)
- shadcn/ui & Radix UI – Accessible UI components (MIT License)
- Lucide React – Icon toolkit (ISC License)
- class-variance-authority – CSS variants API (Apache-2.0 License)
Special thanks to the open-source community for making tools like this possible.