Convert Int to Binary in Python

John on November 24, 2021

To convert an integer to binary in Python use either the bin() or format() function. In this tutorial, we will learn how to use both.

Use bin() to Convert Int to Bin

In the example below, we will use the bin() function to change an int into binary representation.

num = 10

res = bin(num)

print(res)

0b1010

If you don't need the 0b prefix, trim the first two characters like this:

num = 10

res = bin(num)[2:]

print(res)

1010

Use format() to Convert Integer to Binary

The Python format() function can change integers to binary by setting the formatting type (the second argument) as "b". Here is an example:

num = 10

res = format(num, "b")

print(res)

1010