Character Counter
Japanese Text Character Count Tool — 文字数カウンター
Count characters in Japanese and English text in real time. Shows character count with/without spaces, lines, paragraphs, bytes (UTF-8), manuscript pages, and estimated reading time. Free, no login required.
Character Limits Quick Reference
| Platform / Use Case |
Character Limit |
Notes |
| X (formerly Twitter) | 140 chars | URLs shortened to 23 chars |
| Instagram Caption | 2,200 chars | Including hashtags |
| Instagram Bio | 150 chars | |
| LINE Message | No limit (500 recommended) | |
| Email Subject | 60-100 chars recommended | Mobile shows 25-35 |
| SEO Title Tag | ~60 chars (30 JP full-width) | Google display limit |
| SEO Meta Description | ~160 chars (80 JP full-width) | |
| University Report | 2,000-4,000 chars | Varies by assignment |
| Job Application (ES) | 200-600 chars | Per section |
| Manuscript Paper (原稿用紙) | 400 chars | 20 cols x 20 rows |
How to Use the Character Counter
Simply type or paste your text into the text area above, and the character count updates in real time. No button clicks needed. You can instantly see the character count with and without spaces, line count, paragraph count, byte count (UTF-8), manuscript page equivalent, and estimated reading time all at once.
Set a character limit to visualize your progress with a progress bar. This is especially useful when writing Japanese job application entry sheets (エントリーシート) or social media posts with strict character limits.
Why Japanese Text Counting Is Different
Counting characters in Japanese text presents unique challenges compared to English. Japanese uses three writing systems — kanji (漢字), hiragana (ひらがな), and katakana (カタカナ) — each with different byte sizes in UTF-8 encoding. While a Latin character takes 1 byte, each Japanese character takes 3 bytes. This distinction matters for database field limits, API request sizes, and SMS messages.
Japanese also uses full-width characters (全角) for numbers and punctuation alongside half-width (半角) equivalents. The manuscript page calculation (原稿用紙換算) is a uniquely Japanese metric based on traditional 400-character writing paper used in schools and publishing. Whether you are an expat writing a job application in Japan, a student working on an essay, or a social media manager crafting posts, this tool handles all these nuances automatically. All processing happens in your browser — your text is never sent to any server.
Frequently Asked Questions
Does the character counter include spaces?
This tool displays both "Characters (with spaces)" and "Characters (no whitespace)" simultaneously. Use the count that matches your requirement. For social media posts, spaces are typically included in the character count. For academic essays and job applications in Japan, check the specific instructions.
What is the character limit on X (Twitter)?
X (formerly Twitter) has a 140-character limit for standard posts. Both full-width Japanese characters and half-width Latin characters count as 1 character each. URLs are shortened and counted as 23 characters. Premium subscribers can post up to 25,000 characters.
How is the manuscript page count calculated?
The manuscript page count (原稿用紙) is based on traditional Japanese writing paper with 400 characters per sheet (20 columns x 20 rows). The tool divides the character count (excluding whitespace) by 400 and rounds up. For example, 850 characters equals 3 manuscript pages (850 ÷ 400 = 2.125, rounded up to 3).
What is the difference between character count and byte count?
Character count measures the number of characters, while byte count measures the data size in UTF-8 encoding. In UTF-8, ASCII characters (Latin letters, numbers) use 1 byte each, while Japanese characters (hiragana, katakana, kanji) use 3 bytes each. Byte count is important for database field limits and API request limits.
How many characters should a Japanese job application be?
Japanese job application entry sheets (エントリーシート) typically require 200-600 characters per section. It is recommended to fill 90-100% of the specified character limit. For example, if the limit is 200 characters, aim for 180-200 characters. Use the target counter feature in this tool to track your progress.