Make float to int python

How to Convert Float to Integer Type Value in Python

In this tutorial, learn how to convert float to integer type value in Python. The short answer is: use int() function to convert a positive or negative float value to an integer.

If you use only the int() , you will get integer value without a round figure. To convert float to int with the round figure, read this tutorial to the end.

Python Convert Float to Integer Using int()

If you want to convert float to integer variable type in Python. You have to use the int() function of Python. Pass the float variable as the argument of the int() function in Python.

To print the resulted integer value after conversion, you have to use the Python print() function.

The above example prints the integer value in the output. However, this is the positive conversion of the positive float value. If you want to convert a negative float value to an integer, you have to read the next section of this post.

Bonus: download a Free Python cheat sheet that will show you 20+ most important examples to learn in Python.

How to Change Negative Float Value to Int in Python

To change or convert the negative float value, you have to use the same int() function. You have to also pass the float variable as the argument of the int() in Python.

The negative float value gives the negative integer on conversion.

The above example showing the negative integer value in the output after conversion. All the above examples showing the conversion from float to int without a round figure.

If you want to convert float to integer type value with round figure conversion. Read the next section of the post to learn how to how to make the conversion with a round figure.

How to Altering Float to Int in Round Figure

If you want to convert float to int type value in Python with a round figure. You have to use the round() function of Python inside the int() function. Pass the float variable as the argument of the round() function in Python.

The round() function add one to the integer value after conversion, if the digit after the decimal point is more than 5.

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Convert Float to Int in Python

In Python, there are many situations where we have to convert float values to int values. Many approaches can be used for converting float to int values:

• conversion using int() .
• conversion using math.floor() and math.ceil() .
• conversion using round() .
• conversion using math.trunc() .

How to Convert Float to Int in Python?

We can convert a float value to an int using Type conversion in Python. Type Conversion is an explicit way of changing an operand to a certain type. Python comes with a few in-built methods to achieve this.

Displaying a floating value as a number or a percentage is a frequent application for converting a float to an integer. Integer values can be shown as such without affecting the actual data type because they are immutable. So when calculating efficiency, integer values are always preferred over floating-point values.

So for all this process, we use Python inbuilt functions for converting the float value to the integer values, for example int() function, etc.

Example: Let’s take a look at int values in Python

What is Float in Python?

The float type represents the floating point number in Python. A decimal point is used to separate the integer and fractional elements of the word «float,» which denotes real numbers.

Python uses 64-bit double-precision numbers to represent float values. Any floating-point number can have a maximum value of approximately 1.8 x 10^308. The Python string inf will indicate any number bigger than 1.8 x 10^308 . 77.44 , 42.3e19 , and -32.64+e12 are examples of floating point numbers.

Example: Let’s take a look at float values in Python

What is int in Python?

In Python is a whole number having no decimal points. Integer values can be of any size and can be negative or positive. Int Class defines Integer values. As integer does not consist of any decimal points and hence can extend up to the computer’s limit. However, you can subsequently change it. By default, Int is decimal, or base 10, although you can later convert it. Examples of some integer values are 20 , 1 , -10, etc.

Example: Let’s take a look at int value in Python

Methods to convert float to int in Python

For converting float to int in Python, we can use many methods. These methods use type conversion or inbuilt library functions enlisted below:

• conversion using int()
• conversion using math.floor() and math.ceil()
• conversion using round()
• conversion using math.trunc()

Method 1: Conversion using int()

Python has a variety of built-in methods that can make programming easier. One such method is int() , which quickly transforms any data type into an integer. The function trims the values after the decimal points and accepts a float-point variable as an argument. The result is an integer or whole number as the output. Let’s look at the syntax of int() method:

Return Value:

This method returns an integer value .

Example 1: Let’s take an example of how the int() method is used to convert the float value to int value:

Example 2: The int() function typically rounds off the results to the nearest integer before the decimal point. However, there are times when an exception occurs, so we cannot predict or define the behavior in those situations.

Output: It rounded out the value because there is an insignificant difference between 3.99999999999999999 and 4.0 .

Method 2: Conversion using math.floor() and math.ceil()

Use the floor() method and pass the value as the method’s parameter if you want to convert a float value to an int value that is no larger than the input. While using the ceil() method, you can change it to a value greater than the original.

Return Value: This method returns an integer value converting on the fact that ceil() is used or floor() is used.

Let’s take an example of how the floor() and ceil() method is used to convert the float value to int value:

Method 3: Conversion using round()

Using the round() method, a float value can be converted to an int value, which is the closest integer value. When there is an equal difference between smaller and larger values, the larger integer is chosen.

Return Value: This method returns an integer value rounding the given value to the nearest integer.

Let’s take an example of how the round() method is used to convert the float value to int value:

Method 4: Conversion using math.trunc()

Python has a built-in function called trunc() that helps in providing an integer value. The method takes the float-point value and ignores the remainder of the value. Let’s look at the example below to see how the trunc() method is used:

Return Value: This method returns an integer value removing the decimal part of the value.

Let’s take an example of how the trunc() method is used to convert the float value to int value:

Limitations for Converting Float to Int in Python

• Although the int() method can be used for type conversions, it is not advised because there is a chance of data loss.
• To prevent data loss, you can use the math module. If the function is not used properly, data loss does not change.

Conclusion

• Many approaches can be used to convert float to int in Python.
• We can convert a float value to an int using Type conversion.
• The float type represents the floating point number in Python. A decimal point is used to separate the integer and fractional elements of the word «float,» which denotes real numbers.
• In Python, Integer values can be of any size. Int values can be negative or positive. Int Class can define integer values.
• These methods use type conversion or inbuilt library functions enlisted below:
  • conversion using int()
  • conversion using math.floor() and math.ceil()
  • conversion using round()
  • conversion using math.trunc()

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  Convert float to int Python + Examples

  To convert a float to int in python, we will use the built-in int() function. This function will return the integer number part.

  num = 5.4 num = int(num) print(num)

  You can refer to the below screenshot to see the output for how to convert float to int python.

  

  This is how to convert float to int in Python.

  How to transform float to int Python

  Now, we will see how to transform float to int python

  In this example, we will use trunc() function. The trunc() function returns the integer part of the number. It ignores everything after the decimal points.

  from math import trunc print(trunc(14.2))

  You can refer to the below screenshot to see the output for how to transform float to int python.

  

  The above Python code we can use to transform float to int in Python.

  How to convert float list to int in Python

  Here, we will see how to convert float list to int in python

  To convert float list to int in python we will use the built-in function int and it will return a list of integers.

  num = [12.1, 14.2, 15.8, 17.4] print([int(num) for num in num])

  You can refer to the below screenshot to see the output for how to convert float list to int in python.

  

  The above code, we can use to convert float list to int in Python.

  How to convert float to whole number python

  Let’s see how to convert float to whole number python

  In this example, we will use the built-in round() function which will round up the value and returns the integer value.

  You can refer to the below screenshot to see the output for how to convert float to whole number python.

  

  The above code, we can use to convert float to whole number in Python.

  Python convert float to int ceil

  Let us see how to convert float to int ceil.

  In this example, we will use ceil() function which will rounds up the next full integer value.

  from math import ceil print(ceil(15.7))

  You can refer to the below screenshot to see the output for python convert float to int ceil.

  

  This is how to convert float to int ceil in Python.

  Convert float array to int in python

  Now, we will see how to convert float array to int in python.

  To convert float array to int in python we will first import numpy as np and then we will use the function astype() and it will return the integer.

  import numpy as np arr = np.array((1.4, 2.6, 3.1, 4.3)) arr = arr.astype(int) print(arr)

  You can refer to the below screenshot to see the output for convert float array to int in python.

  

  The above code, we can use to convert float array to int in python.

  Convert float to int Python numpy

  Here, we will see how to convert float to int python numpy.

  In this example, we will import numpy as np and the built-in function astype() is used to convert float to int python numpy.

  import numpy as np arr = np.array([[5.3, 6.5, 7.234], [30.3, 33.543, 35.995]]) arr = arr.astype(int) print(arr)

  You can refer to the below screenshot to see the output for convert float to int python numpy.

  

  The above Python code, we can use to convert float to int Python numpy.

  How to convert negative float value to int in python

  Let’s see how to convert negative float value to int in python.

  To convert the negative float value to int in python, we have to use the int() function. Also, we have to pass the float variable as the argument of the int() in python.

  float_val = -12.8; print(int(float_val));

  You can refer to the below screenshot to see the output for how to convert negative float value to int in python.

  

  This is how to convert negative float value to int in python.

  How to convert float variable to int in python

  Now, we will see how to convert float variable to int in python.

  To convert float variable to int in python, we will use the int() function. Also, we have to pass the float variable as the argument of the int() in python, and to get the output use the print() function.

  float_var = 18.8; print(int(float_var));

  You can refer to the below screenshot to see the output for how to convert float variable to int in python.

  

  The above code, we can use to convert float variable to int in python.

  You may like the following Python tutorials:

  In this Python tutorial, we have learned about how to convert float to int python. Also, we covered these below topics:

  • How to convert float to int python
  • How to transform float to int python
  • How to convert float list to int in python
  • How to convert float to whole number python
  • Python convert float to int ceil
  • Convert float array to int in python
  • Convert float to int python numpy
  • How to convert negative float value to int in python
  • How to convert float variable to int in python

  I am Bijay Kumar, a Microsoft MVP in SharePoint. Apart from SharePoint, I started working on Python, Machine learning, and artificial intelligence for the last 5 years. During this time I got expertise in various Python libraries also like Tkinter, Pandas, NumPy, Turtle, Django, Matplotlib, Tensorflow, Scipy, Scikit-Learn, etc… for various clients in the United States, Canada, the United Kingdom, Australia, New Zealand, etc. Check out my profile.

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