Free Online Number Base Converter

Convert hexadecimal, decimal, binary, octal, and ASCII instantly. Batch support, step-by-step explanations. No signup required.

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Number Base Converters

Convert between hexadecimal, decimal, binary, octal, and ASCII with free online tools.

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Encode and decode Base64, URLs, HTML entities, Unicode, hexadecimal text, and binary text.

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Why Use hex2dec.com?

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Instant Conversion

Results update in real-time as you type. No waiting, no page reloads.

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Batch Processing

Convert multiple values at once. Paste a list and get all results instantly.

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Step-by-Step Guide

Learn how the conversion works with detailed explanations for each calculation.

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No Signup Required

100% free with no registration. Most tools process input directly in your browser.

All Conversion and Developer Tools

→ Hex to Decimal Converter → Decimal to Hex Converter → Hex to Binary Converter → Binary to Hex Converter → Hex to Octal Converter → Octal to Hex Converter → Binary to Decimal Converter → Decimal to Binary Converter → Hex to ASCII Converter → Hex to Text Converter → ASCII to Hex Converter → Text to Hex Converter → Text to Binary Converter → Binary to Text Converter → Text to Decimal Converter → Decimal to Text Converter → Text to ASCII Converter → Binary to Octal Converter → Octal to Decimal Converter → Base64 Encode → Base64 Decode → URL Encode → URL Decode → HTML Encode → HTML Decode → Unicode to Hex Converter → Hex to Unicode Converter → JSON Formatter → JSON Validator → JSON Minifier → JSON to CSV Converter → CSV to JSON Converter → Hex Calculator → Hex to RGB Color Converter → Hex Decimal Conversion Table → How to Convert Hex to Decimal → How to Convert Decimal to Hex

About Hexadecimal and Decimal Numbers

Hexadecimal(base 16) is a number system widely used in computing and digital electronics. It uses 16 symbols: 0-9 and A-F. Hexadecimal numbers are often prefixed with "0x" (e.g., 0xFF) or suffixed with "h" (e.g., FFh).

Decimal (base 10) is the standard number system used in everyday life, with symbols 0-9. Converting between hex and decimal is a common task in programming, networking (IP/MAC addresses), color codes (e.g., #FF5733), and debugging.

Our free online converter suite handles number bases, ASCII text, Base64, URL encoding, HTML entities, Unicode code points, JSON formatting, JSON validation, and CSV conversion.