Free Online Hex to Decimal Converter

Convert hexadecimal to decimal instantly, including large integers and batch input. Get accurate results with step-by-step explanations. No signup required.

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Hex to Decimal

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Turn everyday numbers into hex instantly

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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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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.

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.