Katakana (カタカナ) is the second Japanese phonetic script you should learn, right after Hiragana. It represents the same 46 sounds as Hiragana, but with sharper, more angular characters — and it's used for completely different purposes.
If Hiragana is the script of native Japanese words, Katakana is the script of the outside world. Foreign loanwords, foreign names, scientific terms, onomatopoeia, and emphasis all use Katakana. In modern Japanese, Katakana appears constantly — menus, advertisements, product names, and technology are full of it.
When Is Katakana Used?
Understanding when to use Katakana is just as important as knowing the characters:
- Foreign loanwords: コーヒー (koohii, coffee), パソコン (pasokon, personal computer)
- Foreign names: オーストラリア (oosutoraria, Australia), マイケル (maikeru, Michael)
- Scientific/technical terms: ウイルス (uirusu, virus), エネルギー (enerugii, energy)
- Onomatopoeia: ドキドキ (dokidoki, heart beating), ニャー (nyaa, meow)
- Emphasis: Like italics or bold in English — words written in Katakana for visual stress
- Company/brand names: トヨタ (Toyota), ソニー (Sonii, Sony)
The 46 Basic Katakana Characters
| a | i | u | e | o | |
|---|---|---|---|---|---|
| — | ア | イ | ウ | エ | オ |
| k | カ | キ | ク | ケ | コ |
| s | サ | シ | ス | セ | ソ |
| t | タ | チ | ツ | テ | ト |
| n | ナ | ニ | ヌ | ネ | ノ |
| h | ハ | ヒ | フ | ヘ | ホ |
| m | マ | ミ | ム | メ | モ |
| y | ヤ | — | ユ | — | ヨ |
| r | ラ | リ | ル | レ | ロ |
| w | ワ | — | — | — | ヲ |
| n | ン | — | — | — | — |
Each Katakana character maps to exactly the same sound as its Hiragana counterpart. ア (a) = あ (a). カ (ka) = か (ka). The sounds are identical — only the writing differs.
Katakana vs Hiragana — Key Differences
While they represent the same sounds, the scripts differ in important ways:
Visual style: Katakana strokes are straight and angular. Hiragana strokes are curved and flowing. Compare: か (Hiragana ka) vs カ (Katakana ka).
Long vowels: In Hiragana, long vowels are written with extra characters (おう for "ou"). In Katakana, a dash ー extends the vowel: コーヒー (koohii).
Usage context: Mixing them up is like writing "HELLO how ARE you" in English — technically readable, but it looks wrong and confuses readers.
Tricky Katakana Pairs
These characters look dangerously similar and trip up most learners:
- ツ (tsu) vs シ (shi) — ツ has vertical strokes; シ has horizontal strokes
- ソ (so) vs ン (n) — ソ's strokes slant right; ン's strokes slant left
- ノ (no) vs メ (me) — メ has a cross stroke
- ワ (wa) vs ウ (u) — ワ has a longer left stroke
- ク (ku) vs タ (ta) — タ has an extra horizontal stroke
The best way to distinguish them is to practise writing them side by side.
Common Katakana Loanwords
Japanese absorbs huge numbers of English words. Practise reading these:
- テレビ (terebi) — television
- レストラン (resutoran) — restaurant
- チョコレート (chokoretto) — chocolate
- アイスクリーム (aisukuriimu) — ice cream
- インターネット (intaanetto) — internet
Notice how Japanese adapts English sounds to fit its phonetic system: "television" becomes "terebi" because Japanese doesn't have a "v" sound or consonant clusters like "lev."
Tips for Mastering Katakana
Learn it right after Hiragana. The sounds are identical, so you're only learning new shapes — not new sounds.
Focus on the confusing pairs first. If you can tell ツ from シ and ソ from ン, you've conquered the hardest part.
Read real Katakana in the wild. Japanese menus, product packaging, and advertisements are excellent practice material.
Use flashcards with spaced repetition. Kanabloom's Katakana mode is designed exactly for this — master the characters through timed review intervals.
Download Kanabloom on iOS to practise Katakana with spaced repetition flashcards and track your progress as you learn.
