Hiragana to Romaji converter

Text tools

Paste hiragana and convert it to romaji in Hepburn or Kunrei style. The small tsu (っ), long vowels, and ん are handled correctly. Everything runs in your browser; your data is never uploaded.

Convert hiragana to romaji

This tool converts hiragana (like とうきょう) into romaji (toukyou) directly in your browser. Type or paste hiragana, pick a romanization style, and the romaji appears instantly; nothing is uploaded.

How it works

Each kana is looked up in a syllable table, checking two-character yoon (like きゃ) before single kana so palatalized sounds map as one unit. Any stray katakana is folded to hiragana first, so mixed input still works. Characters that aren't kana — spaces, punctuation, digits — pass through unchanged.

Steps

  1. Type or paste your hiragana into the left panel.
  2. Choose Hepburn or Kunrei romanization.
  3. Read the romaji in the right panel — it updates as you type — then click Copy.

Example: がっこうgakkou.

Hepburn vs Kunrei

KanaHepburnKunreiNotes
shisiHepburn matches English sound
chiti
tsutu
fuhu
jizi
しゃshasyaYoon

Use Hepburn for names, signage, and anything read by English speakers. Use Kunrei when you need the systematic Japanese standard (taught in schools, used in some official documents).

Special cases

FeatureHiraganaRomajiRule
Small tsu (sokuon)がっこうgakkouっ doubles the next consonant
Sokuon + chまっちゃmatchaHepburn writes the doubled ch as tch
Long vowelらーめんraamenThe chouon mark ー repeats the previous vowel
Syllabic n before vowelしんあいshin'aiん is written n' to avoid ambiguity

When to use this vs Kana → Romaji

This tool is the hiragana-first shortcut. If you regularly convert katakana loanwords and names, the Kana → Romaji tool is the general-purpose version (it still accepts both). Either way, conversion runs entirely in your browser, so your text is never uploaded — safe for names, drafts, and anything private.

Operated by

Turnint AI
unbounded pioneering inc

Turnint AI Tools is a suite of free tools built and operated by unbounded pioneering inc, the company behind the Turnint AI agent platform.

Ryosuke Suzuki
Ryosuke SuzukiFounder & CEO

Founder & CEO of Unbounded Pioneering Inc., the company behind the Turnint AI agent platform, and an expert in machine learning and AI product development. He began his career in machine learning research at a university laboratory, then designed and built large-scale products as a software engineer at PLAID, Rakuten, and Recruit, while also driving new business development. Now specializing in generative AI and AI agents, he works across both engineering and business development, and is a named inventor on multiple granted patents in web technology.

Named inventor on granted patents JP6887648 & JP7480958 · Patent pending on Turnint AI technology

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