Hex to decimal converter
Free online hex to decimal converter. Convert between hexadecimal, binary, octal and decimal number bases instantly.
How it works
- 1
Enter the number
Type the number to convert in the field, using digits valid for the chosen base.
- 2
Select the starting base
Choose the base of the entered number: decimal (base 10), binary (base 2), octal (base 8) or hexadecimal (base 16).
- 3
View the 3 conversions
The tool instantly shows the number in the other 3 bases with automatic input validation.
FAQ
What is the binary system?
The binary system uses only 2 digits (0 and 1). It's the language of computers: every digital data is stored in binary.
What is hexadecimal used for?
Hexadecimal (base 16) uses digits 0-9 and letters A-F. It's used for color codes (#FF5733), memory addresses and low-level programming.
How do I read a binary number?
Each position represents a power of 2. For example: 1010 in binary = 1×8 + 0×4 + 1×2 + 0×1 = 10 in decimal.
