# Python Program to Calculate Sum of Odd Numbers

Write a Python Program to Calculate Sum of Odd Numbers from 1 to N using While Loop, and For Loop with an example.

## Python Program to Calculate Sum of Odd Numbers from 1 to N using For Loop

This Python program allows the user to enter the maximum value. Next, Python is going to calculate the sum of odd numbers from 1 to user-entered maximum value.

In this example, For Loop is used to keep the odd numbers are between 1 and maximum value.

TIP: I suggest you refer to Python Odd numbers from 1 to N article to understand the logic behind printing Odd numbers in Python.

```# Python Program to Calculate Sum of Odd Numbers from 1 to N

maximum = int(input(" Please Enter the Maximum Value : "))
Oddtotal = 0

for number in range(1, maximum+1):
if(number % 2 != 0):
print("{0}".format(number))
Oddtotal = Oddtotal + number

print("The Sum of Odd Numbers from 1 to {0} = {1}".format(number, Oddtotal)) ```

Python sum of odd numbers output

`````` Please Enter the Maximum Value : 12
1
3
5
7
9
11
The Sum of Odd Numbers from 1 to 12 = 36``````

## Python Program to display Sum of Odd Numbers from 1 to N without If

This Python sum of odd numbers program is the same as above. But, we used the third parameter inside the for loop to eliminate the If block.

```# Python Program to Calculate Sum of Odd Numbers from 1 to N

maximum = int(input(" Please Enter the Maximum Value : "))
Oddtotal = 0

for number in range(1, maximum+1, 2):
print("{0}".format(number))
Oddtotal = Oddtotal + number

print("The Sum of Odd Numbers from 1 to {0} = {1}".format(number, Oddtotal))```

Python sum of odd numbers using a for loop output

`````` Please Enter the Maximum Value : 15
1
3
5
7
9
11
13
15
The Sum of Odd Numbers from 1 to 15 = 64``````

## Python Program to find Sum of Odd Numbers using While Loop

In this Python program, we replaced the For Loop with While Loop.

```# Python Program to Calculate Sum of Odd Numbers from 1 to N

maximum = int(input(" Please Enter the Maximum Value : "))
Oddtotal = 0
number = 1

while number <= maximum:
if(number % 2 != 0):
print("{0}".format(number))
Oddtotal = Oddtotal + number
number = number + 1

print("The Sum of Odd Numbers from 1 to {0} = {1}".format(maximum, Oddtotal))```

Python sum of odd numbers using a while loop output

`````` Please Enter the Maximum Value : 20
1
3
5
7
9
11
13
15
17
19
The Sum of Odd Numbers from 1 to 20 = 100``````

## Python Program to find Sum of Odd Numbers from 1 to 100

This Python example allows the user to enter Minimum and maximum value. Next, Python calculates the sum of odd numbers from Minimum to the maximum value.

```# Python Program to Calculate Sum of Odd Numbers from 1 to 100

minimum = int(input(" Please Enter the Minimum Value : "))
maximum = int(input(" Please Enter the Maximum Value : "))
Oddtotal = 0

for number in range(minimum, maximum+1):
if(number % 2 != 0):
print("{0}".format(number))
Oddtotal = Oddtotal + number

print("The Sum of Odd Numbers from {0} to {1} = {2}".format(minimum, maximum, Oddtotal))```