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Hex to Decimal Converter

Convert hexadecimal values to decimal, binary and octal.

To convert hexadecimal to decimal, enter a hex value above with or without a 0x prefix. Hexadecimal digits run 0 to 9 then A to F, and the converter shows the equivalent decimal, binary and octal representations together.

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Runs entirely in your browser — nothing is uploaded
Cost
Free, unlimited, no sign-up

Frequently asked questions

Why is hexadecimal used instead of decimal?

Because one hex digit maps exactly to four bits, so a byte is always two hex digits. Decimal has no such alignment — 255 tells you nothing about the bit pattern, while FF makes it obvious every bit is set.

What do the letters A to F represent?

The values ten to fifteen. Hexadecimal is base 16, so it needs sixteen distinct digits and the decimal system only supplies ten. A is 10, B is 11, and so on to F at 15.

Why do colours use hex?

A colour is three bytes — red, green and blue — and each byte is two hex digits, so #FF8800 is exactly and unambiguously 255, 136, 0. The same value in decimal would need separators and would not reveal the byte boundaries.

How to use the hex to decimal converter

  1. 1Enter or paste your value.
  2. 2The result appears immediately — copy or download it.

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