Binary/Octal/Decimal/hexadecimal converter

Convert Hexadecimal to Decimal.

Hexadecimal → Decimal
Before conversion:

How to use Base Converter

Enter the Hexadecimal value you want to convert and click the "Convert" button.

The input value will be calculated and the converted result will be displayed in Decimal.

The calculation method for conversion is also displayed.

Numerical input range

Hexadecimal:0–9,A–F

Conversion by base number

Binary -> Octal Binary -> Decimal Binary -> Hexadecimal Octal -> Binary Octal -> Decimal Octal -> Hexadecimal Decimal -> Binary Decimal -> Octal Decimal -> Hexadecimal Hexadecimal -> Binary Hexadecimal -> Octal Hexadecimal -> Decimal

How to convert from Hexadecimal to Decimal

Method of calculation

Starting from the first digit, the hexadecimal numbers are 160, 161, 162, 163 .

Therefore, when converting a hexadecimal number to a decimal number, you can find it by calculating the number of digits x 16n for each digit.

If the digit number is A to F, convert it to 10 to 15 for calculation.

HexadecimalABCDEF
Decimal101112131415
  • 1. Calculate 16n for each digit.
  • 2. Converts the number of digits to a decimal number from 10 to 15.
  • 2. Calculate all non-zero digits x 16n.
  • 3. The sum of all calculated numbers is the result of converting to decimal.

Calculation example

Example: Convert Hexadecimal "7B3" to Decimal

DigitHexadecimal16n
1 3 160 = 1
2 B = 11 161 = 16
3 7 162 = 256

Calculating the number of non-zero digits x 16n yields "3×160 + 11×161 + 7×162 = 3 + 176 + 1792 = 1971".

Therefore, converting hexadecimal number "7B3" to decimal number becomes "1971".

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