Katakana in Japanese

Overview

Katakana (カタカナ) is the second Japanese phonetic script, containing the same 46 basic sounds as hiragana but with distinctly different, more angular character shapes. While hiragana has rounded strokes, katakana characters tend to be straighter and sharper, making them visually distinct even at a glance.

Katakana is primarily used for foreign loanwords (gairaigo), onomatopoeia, scientific and technical terms, company names, and emphasis (similar to italics in English). As a CEFR A1 learner, you will encounter katakana constantly in daily life -- on menus, signs, product packaging, and in conversations about food, technology, and pop culture.

Because modern Japanese borrows heavily from English and other languages, katakana words often feel familiar once you learn to read them. Words like コーヒー (koohii, "coffee"), レストラン (resutoran, "restaurant"), and パソコン (pasokon, "personal computer") are part of everyday vocabulary. Learning katakana unlocks a surprisingly large portion of practical Japanese.

How It Works

The Basic 46 Characters

Katakana follows the same vowel-consonant grid as hiragana:

	a	i	u	e	o
(vowel)	ア (a)	イ (i)	ウ (u)	エ (e)	オ (o)
k	カ (ka)	キ (ki)	ク (ku)	ケ (ke)	コ (ko)
s	サ (sa)	シ (shi)	ス (su)	セ (se)	ソ (so)
t	タ (ta)	チ (chi)	ツ (tsu)	テ (te)	ト (to)
n	ナ (na)	ニ (ni)	ヌ (nu)	ネ (ne)	ノ (no)
h	ハ (ha)	ヒ (hi)	フ (fu)	ヘ (he)	ホ (ho)
m	マ (ma)	ミ (mi)	ム (mu)	メ (me)	モ (mo)
y	ヤ (ya)		ユ (yu)		ヨ (yo)
r	ラ (ra)	リ (ri)	ル (ru)	レ (re)	ロ (ro)
w	ワ (wa)				ヲ (wo)
	ン (n)

Long Vowels

Unlike hiragana (which spells out long vowels with extra vowel characters), katakana uses a long dash ー to extend vowels:

Katakana	Reading	Meaning
コーヒー	koohii	coffee
ケーキ	keeki	cake
ノート	nooto	notebook

Special Katakana Combinations

Katakana has extra combinations not found in hiragana, used to represent foreign sounds:

Combination	Sound	Example
ティ	ti	パーティー (paatii, "party")
ディ	di	ディスク (disuku, "disk")
ファ	fa	ファン (fan, "fan")
ヴ	vu	ヴァイオリン (vaiorin, "violin")
ウィ	wi	ウィンドウ (windou, "window")

When to Use Katakana

Category	Examples
Foreign loanwords	テレビ (terebi, "TV"), バス (basu, "bus")
Foreign names	マイク (Maiku, "Mike"), ロンドン (Rondon, "London")
Onomatopoeia	ワンワン (wanwan, "woof woof"), ドキドキ (dokidoki, "heartbeat")
Emphasis	Like WRITING IN CAPS in English
Scientific terms	ウイルス (uirusu, "virus")

Examples in Context

Japanese	English	Note
コーヒー	coffee (koohii)	Long vowel shown with ー
レストラン	restaurant (resutoran)	Common loanword
パソコン	personal computer (pasokon)	Abbreviated compound
アメリカ	America (Amerika)	Country name
チョコレート	chocolate (chokoreeto)	Food item
タクシー	taxi (takushii)	Transportation
アルバイト	part-time job (arubaito)	From German "Arbeit"
スマートフォン	smartphone (sumaatofon)	Modern technology
マクドナルド	McDonald's (Makudonarudo)	Brand name
カラオケ	karaoke (karaoke)	Japanese origin, written in katakana for emphasis

Common Mistakes

Confusing similar katakana characters

• Wrong: Reading シ (shi) as ツ (tsu)
• Right: シ has strokes going more to the left; ツ has strokes going more downward
• Why: シ/ツ and ソ/ン are the most commonly confused pairs. Pay close attention to stroke direction.

Forgetting the long vowel dash

• Wrong: Writing ケキ for "cake"
• Right: ケーキ (keeki) with the ー long vowel mark
• Why: The ー is essential in katakana. Without it, the word sounds wrong and may be unrecognizable.

Using katakana for native Japanese words

• Wrong: Writing ワタシ for "I" in a normal sentence
• Right: わたし (in hiragana) or 私 (in kanji)
• Why: Katakana for native words implies emphasis or a special effect. In normal writing, use hiragana or kanji.

Mispronouncing loanwords with English pronunciation

• Wrong: Saying "McDonald's" with English sounds
• Right: Say マクドナルド (ma-ku-do-na-ru-do) with Japanese sounds
• Why: Loanwords are adapted to Japanese phonology. Each katakana syllable must be pronounced clearly.

Practice Tips

• Read menus and signs. Japanese restaurants, convenience stores, and train stations are full of katakana. Practice reading product names, food items, and brand names whenever you encounter them.

• Practice converting English words to katakana. Pick common English words and figure out how they would be written in katakana. This builds your understanding of how Japanese adapts foreign sounds (e.g., "ice cream" becomes アイスクリーム, aisukuriimu).

• Pair each katakana with its hiragana equivalent. Since the sounds are identical, learning them side by side reinforces both scripts. Make flashcards with hiragana on one side and katakana on the other.

Related Concepts

• Prerequisite: Hiragana -- you need hiragana first since it covers the same sounds with different characters