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Convert special characters to HTML entities and vice versa. Features real-time conversion and entity reference table.

Generate MD5 and SHA-256 hashes instantly. Real-time calculation, uppercase/lowercase selection, one-click copy.

BMI Calculator Metric (kg/cm) Imperial (lb/ft) Height cm Weight kg Height ft in Weight lb Enter your height and weight to calculate your BMI automatically. 0.0 Body Mass Index (BMI)…

Encode and decode URL strings. Supports full encoding (encodeURIComponent) and partial encoding (encodeURI).

Convert between Unix timestamps and human-readable date/time formats. Supports both seconds and milliseconds.

Format, minify, and validate JSON data with ease.

Calculate your exact age in years, months, and days. Discover your zodiac sign, Chinese zodiac, and countdown to your next birthday.

Calculate how many days remain until the end of the year in real-time. Track your year progress with visual indicators.

Create and download text files (.txt) directly in your browser. No software needed – simply type your content, set a file name, and save as TXT instantly.

Conversion Mode Encode Decode URL-safe Base64 (RFC 4648) Drag and drop or click to upload a file Max 10MB / Processed in browser (no server upload) Input Clear Result Swap…

Character Counter UTF-8: 0 bytes 0 Characters 0 Without Spaces 0 Words 0 Lines Detailed Statistics Sentences 0 Paragraphs 0 Syllables 0 Spaces 0 Numbers 0 Special Chars 0 Avg….