Python program to convert Fahrenheit to Celsius

In this lesson you are going to learn how to convert Fahrenheit to Celsius by using Python script, I’m following Python 3 syntax to write programs which actually works in both Python 2 and Python 3.

Formula for finding the Celsius:

celsius = (fahrenheit – 32)*5/9

Program is very simple only 4 lines of script:

print("Enter Fahrenheit")
#get the fahrenheit
fahrenheit = float(input())
#convert fahrenheit to celsius
celsius = (fahrenheit - 32)*5/9
print ("Celsius:", celsius)

Output:

Enter Fahrenheit: 100
Celsius: 37.7779

The above program is a console program, the same script also can be written as a Python Web script.

Here is the Python web application script to convert Fahrenheit to Celsius:

#!/usr/bin/python
print "Content-type: text/html\n\n";

# Import modules for CGI handling 
import cgi, cgitb 

# Create instance of FieldStorage 
form = cgi.FieldStorage() 

number = form.getvalue('number')


print '''
<html>
<body>
    <h3>Web Based Python script to Convert Fahreheit to Celsius - <a href="http://www.tutorialsmade.com/">Tutorialsmade.com</a></h3>
    <form action="" method="post">
        <label>Enter Fahreheit <label>
        <input type="text" name="number" />
        <input type="submit" value="Submit" />
    </form><br />
</body>
</html>
'''
	
if(number):
	fahrenheit = float(number)
	#convert fahrenheit to celsius
	celsius = (fahrenheit - 32)*5/9
	print "<p>Celsius:",celsius,"<p>"

You can also see the demo of the python web script here: