Word Character Counter Tool - Free Online Text Analyzer with Reading Time and Keyword Density
First Published:
Last Updated:
Free real-time word and character counter with advanced text analysis. All processing is performed entirely within your browser - your text never leaves your device. Supports CJK languages (Japanese, Chinese, Korean) with accurate word segmentation.
⚠️ IMPORTANT DISCLAIMER:
- This tool is provided "AS IS" without any warranties of any kind.
- The author accepts no responsibility for inaccurate counts or any decisions based on results.
- Word counting accuracy for CJK languages depends on browser Intl.Segmenter support.
- By using this tool, you accept full responsibility for any outcomes.
Privacy: This tool operates entirely within your browser using client-side JavaScript. No data is transmitted to servers, and all processing happens locally on your device. Once loaded, this tool continues to work even without an internet connection. For more details, please refer to our Web Tools Disclaimer.
0
Characters
0
Words
0
Sentences
0
Chars (no spaces)
0
Paragraphs
0
Lines
Reading Time
0 sec
Speaking Time
0 sec
UTF-8 Bytes
0 B
Unique Words
0
Avg Word Length
0.0
Longest Word
-
Platform Character Limits
Keyword Density Analysis
| # | Keyword | Count | Density |
|---|---|---|---|
| Enter text to see keyword analysis | |||
Features:
- 🕑 Real-Time Analysis: All statistics update instantly as you type - no button needed
- 🌐 CJK Language Support: Accurate word counting for Japanese, Chinese, and Korean using Intl.Segmenter API
- 📋 Comprehensive Statistics: Characters, words, sentences, paragraphs, lines, bytes, unique words, average word length, and longest word
- 📖 Reading & Speaking Time: Estimated reading and speaking duration with CJK-optimized calculation
- 📶 Platform Limit Checker: Visual progress bars for Twitter/X, Instagram, Meta descriptions, LinkedIn, YouTube, SMS, and more
- 📈 Keyword Density Analysis: Top keyword frequency with density percentage and configurable stop word filtering
- 🔩 UTF-8 Byte Counter: Exact UTF-8 encoded byte size for developers working with size-limited systems
- 🐧 Grapheme Cluster Counting: Proper Unicode-aware character counting (emoji and compound characters counted correctly)
- 📱 Mobile Friendly: Responsive design works on all devices
- 🔒 Privacy First: Your text never leaves your device - zero server communication
Common Use Cases:
- Writers & Bloggers: Track word count and reading time for articles, essays, and blog posts
- SEO Professionals: Analyze keyword density and optimize meta descriptions within character limits
- Social Media Managers: Check character limits for Twitter/X posts, Instagram bios, and LinkedIn updates
- Students & Academics: Monitor word count for assignments, papers, and abstracts with specific requirements
- Developers: Calculate UTF-8 byte sizes for database fields, API payloads, and protocol constraints
- Translators: Compare text length across CJK and Latin languages with accurate counting
References:
Tech Blog with curated related content
Web Tools Collection
Written by Hidekazu Konishi