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Python | Ways to convert hex into binary
• Last Updated : 29 Jun, 2019

Conversion of hex to binary is a very common programming question. In this article, we will see a few methods to solve the above problem.

Method #1: Using bin and zfill

 `# Python code to demonstrate  ` `# conversion of a hex string ` `# to the binary string ` ` `  `# Initialising hex string ` `ini_string ``=` `"1a"` `scale ``=` `16` ` `  `# Printing initial string ` `print` `(``"Initial string"``, ini_string) ` ` `  `# Code to convert hex to binary ` `res ``=` `bin``(``int``(ini_string, scale)).zfill(``8``) ` ` `  `# Print the resultant string ` `print` `(``"Resultant string"``, ``str``(res)) `

Output:

Initial string 1a
Resultant string 00b11010

Method #2: Using Naive Method

 `# Python code to demonstrate  ` `# conversion of hex string ` `# to binary string ` ` `  `import` `math ` ` `  `# Initialising hex string ` `ini_string ``=` `"1a"` ` `  `# Printing initial string ` `print` `(``"Initial string"``, ini_string) ` ` `  `# Code to convert hex to binary ` `n ``=` `int``(ini_string, ``16``)  ` `bStr ``=` `'' ` `while` `n > ``0``: ` `    ``bStr ``=` `str``(n ``%` `2``) ``+` `bStr ` `    ``n ``=` `n >> ``1`     `res ``=` `bStr ` ` `  `# Print the resultant string ` `print` `(``"Resultant string"``, ``str``(res)) `

Output:

Initial string 1a
Resultant string 11010

Method #3: Using .format

 `# Python code to demonstrate  ` `# conversion of hex string ` `# to binary string ` ` `  `import` `math ` ` `  `# Initialising hex string ` `ini_string ``=` `"1a"` ` `  `# Printing initial string ` `print` `(``"Initial string"``, ini_string) ` ` `  `# Code to convert hex to binary ` `res ``=` `"{0:08b}"``.``format``(``int``(ini_string, ``16``)) ` ` `  `# Print the resultant string ` `print` `(``"Resultant string"``, ``str``(res)) `

Output:

Initial string 1a
Resultant string 00011010

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