Japanese Text Converter Tools
Handle everyday Japanese text tasks right in your browser — full-width and half-width conversion, hiragana and katakana conversion, Japanese era lookup, genkō yōshi manuscript preview, character counts, page counts, and more.
No sign-up
Works in your browser
Text stays local
Mobile friendly
All Tools
Full/Half Width
Convert Japanese full-width and half-width letters, numbers, spaces, and punctuation.
Kana Converter
Convert hiragana to katakana or katakana to hiragana instantly.
Kana Pad
Click to enter kana and Japanese symbols — no Japanese IME needed.
Genko Paper
Preview text in vertical genkō yōshi layout and calculate character and page counts.
Japanese Era
Convert a Gregorian date to the corresponding Japanese era.
Kaomoji
Search and copy Japanese text emoticons.
Japanese text tools that work in your browser
MojiHako is a collection of small Japanese text utilities for writing, editing, proofreading, and preparing Japanese text online. Most tools run directly in your browser, so your input text stays on your device.
Japanese Text Tools: Guides and Use Cases
- How to Fix “Enter Full-Width” and “Enter Half-Width” Errors in Japanese Forms
- Hiragana and Katakana Conversion: A beginner's Guide
- How to Type Hiragana, Katakana, and Japanese Punctuation Without an IME
- Vertical Genko Yoshi Rules and 200/400-Character Sheet Counting
- Japanese Era Conversion guide: Reiwa, Heisei, Showa, and Gregorian Years
- What Is kaomoji? Japanese Text Emoticons for Profiles and Social Media