Hex to Decimal Converter

Hexadecimal (hex) values appear constantly in programming — memory addresses, color codes, cryptographic hashes, and network protocols. Converting them to decimal or binary by hand is tedious and error-prone. This tool converts any hex value to decimal, binary, and octal simultaneously.

Step-by-step guide

1. Enter the hex value: Type the hex digits in the Input field. The 0x prefix is optional; A–F can be uppercase or lowercase.
2. Select Hexadecimal as the input base: Choose Hexadecimal (base 16) from the From base selector.
3. Read all four outputs at once: The result shows decimal, binary, and octal simultaneously.
4. Use the grouped hex field: The Hex grouped field splits the value into 2-digit bytes (e.g. FF 6A 00) for easier reading.

Frequently asked questions

What does the hex value FF equal in decimal?

255. FF = 15×16 + 15 = 255. It is also the maximum value of an 8-bit unsigned byte.

How do I convert a hex memory address like 0x7FFF to decimal?

Enter 7FFF and select Hexadecimal. The decimal value is 32767 — the maximum positive value of a signed 16-bit integer.

Why do hex values only use digits 0–9 and letters A–F?

Hexadecimal needs 16 symbols. After the 10 digits 0–9, the letters A (10), B (11), C (12), D (13), E (14), F (15) represent the remaining values.