# Python Program to Converter a Binary to Decimal

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## Converter a Number from Binary to Decimal

In the following example, we will convert a Binary number (1000001) to a Decimal number (65).

**Tips**: It is recommended to use our online Binary to Decimal converter for better understanding.

### Example

Python Compiler

import math
num = 1000001
arr = [0]*50
i = -1
total = 0
while(num != 0):
i += 1
arr[i] = num % 10
num = math.floor(num / 10)
for j in range(i, -1, -1):
total += arr[j] * math.pow(2, j)
print("Decimal number of 1000001 (binary) is %d" % math.floor(total))

### Output

Decimal number of 1000001 (binary) is 65

## Converter any Given Binary Number to Decimal Number

In the following example, we will convert any given binary number to a decimal number.

### Example

Python Compiler

import math
num = int(input("Enter a Binary Number: "));
copyNum = num
arr = [0]*50
i = -1
total = 0
while(copyNum != 0):
i += 1
arr[i] = copyNum % 10
copyNum = math.floor(copyNum / 10)
for j in range(i, -1, -1):
total += arr[j] * math.pow(2, j)
print("Decimal number of %d (binary) is %d" % (num, math.floor(total)))

### Output

Enter a Binary Number: 10
Decimal number of 10 (binary) is 2

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