# 文字数カウント (Japanese character counter)

> 日本語の文字数を数えます。改行を除く文字数、空白除く文字数、原稿用紙換算、Xの文字数。Count Japanese characters without spaces or line breaks. 無料、ブラウザ内で完結。

URL: https://tools.cuelark.com/japanese-character-counter
Publisher: Cuelark Team (https://cuelark.com)
Updated: 2026-11-10
Price: free, no sign-up
Privacy: runs in the browser; files are not uploaded

日本語の文章を貼り付けると、改行を除いた文字数、空白を除いた文字数、400字詰め原稿用紙の枚数の目安、Xの文字数をすぐに表示します。Paste Japanese text to count characters the way Japanese forms and essays do: by character, excluding line breaks.

## How to use it

1. 文章を入力または貼り付けます。Type or paste the text.
2. 「文字数 (改行除く)」が一般的な文字数です。The first figure excludes line breaks.
3. Xに投稿する場合はX投稿のバーを確認します。全角文字は2として数えられます。

## Details

- **文字数:** Characters excluding line breaks; full-width and half-width characters each count as one, spaces included
- **空白除く:** Excluding all spaces, full-width (全角) and half-width (半角)
- **原稿用紙:** Characters ÷ 400. A rough guide: real manuscript paper also counts blank squares at paragraph starts and line ends
- **X:** Japanese characters count as 2 of the 280 limit, so about 140 Japanese characters fit in one post

## Questions

### Is anything I type sent anywhere?

No. The calculation runs in this page with JavaScript; dates, text and numbers are never uploaded or stored on a server.

### 文字数に改行やスペースは含まれますか? Are line breaks and spaces counted?

最初の数字は改行を除き、スペースは含みます。スペースも除く数は「空白除く」に表示されます。The main count excludes line breaks but includes spaces; 'without spaces' removes both.

### Why can I only write about 140 characters on X?

X counts each Japanese, Chinese or Korean character as 2 toward its 280 limit, so 140 full-width characters fill a post. Half-width letters and numbers count as 1.

### Is the 原稿用紙 figure exact?

No. On real genkō yōshi, a new paragraph starts with an empty square and lines end early, so the page count is usually a little higher than characters ÷ 400.

### Why is the word count different?

Japanese has no spaces between words, so the word count uses a dictionary-based split from the browser. Japanese writing is normally measured in characters, which is why that is shown first.

## Related tools

- [Character counter](https://tools.cuelark.com/character-counter)
- [Word counter](https://tools.cuelark.com/word-counter)
- [Japanese image to text (OCR)](https://tools.cuelark.com/image-to-text-japanese)
- [Typing speed test](https://tools.cuelark.com/typing-test)