Hexadecimal & Number Base Conversion Tools
Convert hexadecimal to decimal instantly, then explore decimal, binary, octal, ASCII, and Unicode tools with clear calculation steps.
Core Hexadecimal Conversion Tools
Hex to Decimal Converter
Convert FF, 0x1A, FFh, and more
Decimal to Hex Converter
Turn base-10 numbers into hexadecimal
Hex Calculator
Add, subtract, multiply hex
Hex Conversion Table
Search values from 00 through FF
Hex to Binary Converter
Map each hex digit to four bits
Binary to Decimal Converter
Convert base 2 to base 10
Unicode to Hex Converter
Inspect Unicode code points
Hex to Unicode Converter
Decode code points to text
ASCII to Hex Converter
Convert characters to hex
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Number Base Converters
Convert between hexadecimal, decimal, binary, octal, and ASCII with free online tools.
Text Encoding Tools
Encode and decode Base64, URLs, HTML entities, Unicode, hexadecimal text, and binary text.
JSON Tools
Format, validate, minify, and convert JSON, CSV, and developer data formats.
Developer Tools
A collection of lightweight browser-based converters and utilities for developers.
Why Use hex2dec.com?
Instant Conversion
Results update in real-time as you type. No waiting, no page reloads.
Batch Processing
Convert multiple values at once. Paste a list and get all results instantly.
Step-by-Step Guide
Learn how the conversion works with detailed explanations for each calculation.
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Hexadecimal and Number Base Conversion Tools
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.
Binary, octal, decimal, and hexadecimal are different representations of the same integer. Use the hex conversion table for a quick reference, the decimal to hex converter for base-10 input, or thehex calculator for arithmetic. The converters accept common programmer notation such as 0xFF, while the Unicode tools distinguish code points from encoded UTF-8 bytes.
Developers commonly use hex for memory addresses, bit masks, byte values, debugging, and compact binary notation. One hex digit represents four binary bits, so FF maps to 11111111 and decimal 255. Continue with the hex to binary converter, Unicode to hex converter, or hex to Unicode converter.
Frequently Asked Questions
What is hexadecimal?⌄
Hexadecimal is a base-16 number system used in computing. It uses digits 0–9 and letters A–F, where A=10 through F=15. Programmers often write hex values with a 0x prefix, such as 0xFF.
How do I convert hex to decimal?⌄
Multiply each hex digit by 16 raised to its position power, starting from 0 on the right, then add the results. For example, hex FF equals 15×16 + 15 = 255 in decimal.
What is hexadecimal used for?⌄
Hex is used for memory addresses, color codes like #FF5733, MAC addresses, file hashes, debugging, and anywhere compact binary representation is helpful.
Is hex2dec.com free to use?⌄
Yes. All converters are free with no signup required. Most tools run directly in your browser for fast, private conversion.