# 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.

**URL:** https://convertto.tech/t/hex-to-decimal
**Category:** Number Tools (https://convertto.tech/c/number-tools)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

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

## How to use

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

## FAQ

### 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.

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