Romaji to Katakana Converter

Convert Romaji (Roman letters) to Katakana (γ‚«γ‚Ώγ‚«γƒŠ) instantly. Perfect for writing foreign names, loanwords, and technical terms in Japanese katakana.

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Romaji to Katakana Examples

Technology

konpyuutaa β†’ コンピγƒ₯γƒΌγ‚ΏγƒΌ

intaanetto β†’ γ‚€γƒ³γ‚ΏγƒΌγƒγƒƒγƒˆ

sumaatofon β†’ γ‚ΉγƒžγƒΌγƒˆγƒ•γ‚©γƒ³

sofutowea β†’ γ‚½γƒ•γƒˆγ‚¦γ‚§γ‚’

Food & Drinks

koohii β†’ γ‚³γƒΌγƒ’γƒΌ

hanbaagaa β†’ ハンバーガー

piza β†’ ピア

aisukuriimu β†’ γ‚’γ‚€γ‚Ήγ‚―γƒͺγƒΌγƒ 

Common Names

maiku β†’ γƒžγ‚€γ‚―

jon β†’ ジョン

merii β†’ パγƒͺγƒΌ

robaato β†’ γƒ­γƒγƒΌγƒˆ

Katakana Usage Guide

When to Use Katakana

  • Foreign loanwords (コンピγƒ₯γƒΌγ‚ΏγƒΌ)
  • Foreign names (ジョン、パγƒͺγƒΌ)
  • Company names (γƒžγ‚€γ‚―γƒ­γ‚½γƒ•γƒˆ)
  • Scientific/technical terms
  • Onomatopoeia (sound effects)
  • Emphasis (similar to italics)

Special Katakana Features

  • Long vowels marked with γƒΌ
  • Small γ‚‘, γ‚£, γ‚₯, γ‚§, γ‚© for foreign sounds
  • ヴ for "v" sound (ヴィ = vi)
  • ッ for double consonants
  • Middle dot ・ for word separation

About Romaji to Katakana Conversion

This converter is especially useful for:

  • Writing foreign names: Convert your name or others' names to katakana
  • Technical writing: Convert technical terms and jargon to katakana
  • Language learning: Practice katakana writing and recognition
  • Business cards: Create Japanese business cards with names in katakana

The converter automatically handles long vowels (using γƒΌ), special katakana combinations, and common patterns used in foreign word transcription to Japanese.