Hola folks! Today we will build a simpleBMI Calculator in Python.

How does it work?

A BMI Calculator will take in the height and weight of the individual and will calculate the BMI of the person.

Body mass index (BMI) is a measure of body fat based on height and weight.

Based on the BMI of the individual, it will print a statement stating the overall health of the person.

Let's start coding our project!

Let's Code

Alright, so the first thing we need to do is to ask the user their height & weight. This can be easily achieved throughinput() function.

height=float(input("Enter your height in cm:"))weight=float(input("Enter your weight in kg:"))

We will convert the input string to float so that we can perform calculations with it.

Next up, we have to calculate the BMI.

The formula to calculate BMI is $weight (kg)/{height (m)}^2$. Let's implement this formula in python.

BMI=weight/(height/100)**2

Here we will be dividing theheight by 100 to convert thecentimetres intometers.

Now let's print out the BMI.

print(f"You BMI is{BMI}")

Now we have to print a statement to state the current health of the user based on theirBMI.

Here is how BMI is classified:

We are going to simplify it a bit, so make it easier to understand but feel free to stick to this classification if you prefer.

We will be usingif conditionals for classification.

ifBMI<=18.4:print("You are underweight.")elifBMI<=24.9:print("You are healthy.")elifBMI<=29.9:print("You are over weight.")elifBMI<=34.9:print("You are severely over weight.")elifBMI<=39.9:print("You are obese.")else:print("You are severely obese.")

Here's what it will print:

• if BMI isless than or equal to 18.4 thenYou are underweight. will be printed.
• if BMI isless than or equal to 24.9 thenYou are healthy. will be printed.
• if BMI isless than or equal to 29.9 thenYou are over weight. will be printed.
• if BMI isless than or equal to 34.9 thenYou are severely over weight. will be printed.
• if BMI isless than or equal to 39.9 thenYou are obese. will be printed.
• if BMI none of the above are true thenYou are severely obese. will be printed.

That's it! We are done! Easy Peasy right!

Source Code

You can find the complete source code of this project here -

mindninjaX/Python-Projects-for-Beginners

Support

Thank you so much for reading! I hope you found this beginner project useful.

If you like my work please considerBuying me a Coffee so that I can bring more projects, more articles for you.

Also if you have any questions or doubts feel free to contact me onTwitter,LinkedIn &GitHub. Or you can also post a comment/discussion & I will try my best to help you :D