A free, fast, and no-nonsense hex to decimal tool — runs entirely in your browser, no data sent anywhere.
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All hex conversion happens locally. We never see the values you enter.
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Hexadecimal (hex) is a base-16 number system used throughout computing and digital electronics. While the decimal system uses digits 0–9, hexadecimal extends that range using letters A–F to represent values 10–15. Because one hex digit maps cleanly onto four binary bits (a nibble), hex is the preferred shorthand for binary data in programming, memory addresses, color codes (#FF5733), and hardware documentation.
Enter any hexadecimal value and HexConverter instantly displays the decimal equivalent, the octal (base-8) representation, the full binary string, and the signed 32-bit integer — the value you'd get in C or Java using two's complement arithmetic.
| Hex Input | Decimal | Octal | Binary | Signed 32-bit |
|---|---|---|---|---|
| FF | 255 | 377 | 11111111 | 255 |
| 1A3F | 6,719 | 15077 | 1101000111111 | 6,719 |
| DEADBEEF | 3,735,928,559 | 33653337357 | 11011110… | -559,038,737 |
The signed 32-bit output is especially useful for developers debugging C, Java, or embedded systems code where integer overflow produces unexpected negative values.
HexConverter is designed for software developers reading memory dumps and debug output, web designers decoding CSS color hex codes, students studying computer science and number systems, electronics engineers interpreting hardware datasheets, and anyone who needs a quick hex-to-decimal conversion without installing software.
Some frequently searched hex values: 0xFF = 255 (max byte), 0x7FFFFFFF = 2,147,483,647 (max signed 32-bit int), 0xFFFFFFFF = 4,294,967,295 (max unsigned 32-bit int), 0x00 = 0, 0x0A = 10, 0x10 = 16, 0x64 = 100.