Hex To Decimal Converter

Decimal number:
Decimal from signed 2's complement:
Binary number:
Decimal calculation:

To use this hex to decimal converter tool, type a hex value in paired format in the hex number field above, and then click the Convert button.

You can convert up to 16 hex characters (max. value of 7fffffffffffffff) to decimal.

For example: (7fffffffffffffff)16 = (9223372036854775807)10

Use RESET button to clear the calculator.

SWAP button will help you to switch between Hex to Decimal and Decimal to Hex.

hex number

Hex System

Hex or hexadecimal is a number system with base 16. This number system is especially interesting because in decimal number system we have only 10 digits to present the numbers. As hex system has 16 digits, the first 6 letters of English alphabet used to represent extra 6 digits. So, hex digits are 0,1,2,3,4,5,6,7,8 and 9 A, B, C, D, E, F.

Decimal System

Decimal number system also known as Base 10 numbering system because it is based on 10 ranging symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. In decimal system, every digit holds its own position along with the decimal point. I.e. the number 326.34 has 4 in the Hundredths position, 3 in the Tenths position, 6 in the Units position, 2 in the Tens position, and 3 in the Hundreds position.

Decimal number system is also one of the ancient numeral system, whose roots are in Hindu-Arabic numeral system.