int(x)
Conversion to integer will truncate (towards 0.0), like math.trunc.
For non-negative numbers, this is downward.
If your number can be negative, this will round the magnitude downward, unlike math.floor which rounds towards -Infinity, making a lower value. (Less positive or more negative).
Python integers are arbitrary precision, so even very large floats can be represented as integers. (Unlike in other languages where this idiom could fail for floats larger than the largest value for an integer type.)
Answer from Ghostwriter on Stack OverflowServer Academy
serveracademy.com › blog › python-round-function-tutorial
Python Round() Function Tutorial - Server Academy
When it’s lower than .5, Python rounds down.
Real Python
realpython.com › python-rounding
How to Round Numbers in Python – Real Python
December 7, 2024 - For example, the number 2.5 rounded to the nearest whole number is 3. The number 1.64 rounded to one decimal place is 1.6. Now open up an interpreter session and round 2.5 to the nearest whole number using Python’s built-in round() function:
python - Round a floating-point number down to the nearest integer? - Stack Overflow
Please post some examples. ... Mr. Clear – Mr. Clear · 2022-03-06 10:36:45 +00:00 Commented Mar 6, 2022 at 10:36 ... Conversion to integer will truncate (towards 0.0), like math.trunc. For non-negative numbers, this is downward. If your number can be negative, this will round the magnitude downward, unlike math.floor which rounds towards -Infinity, making a lower value. (Less positive or more negative). Python ... More on stackoverflow.com
How to round numbers below?
Use math.floor() to round down. https://docs.python.org/3/library/math.html#math.floor More on reddit.com
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November 29, 2024How to round up without math modules?
Casting a float as an integer will always round down, you can make use of that to create your own 'roundup' function by just casting your number as an int, then adding 1. The exception to that is if your number is already an integer - in that case we don't want to do anything to it, we can handle this case separately beforehand. def round_up(x): if int(x)==x: return int(x) else: return int(x) + 1 More on reddit.com
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0
August 24, 2021how to limit or round a float to only two decimals without rounding up
You can try the solution here: https://stackoverflow.com/a/62435913 More on reddit.com
12
5
January 24, 2024Videos
Python Beginners Tutorial Rounding Up & Down Numbers 2022
08:20
Understanding the Round Function (Video) – Real Python
How to Round Numbers in Python ( Not What You Expect) - YouTube
14:05
Introduction to Rounding Numbers in Python - YouTube
03:16
how to round down numbers in python - YouTube
02:28
Secret Trick! Rounding Up and Down in Python. - YouTube
FavTutor
favtutor.com › blogs › round-down-python
Round Down Numbers in Python (With Examples and Code)
September 3, 2022 - Rounding is the practice of simplifying a number without modifying much of its value. For instance, 9.8 rounded to 10, with only a 0.2 difference. Likewise, 10.2 rounded to 10, with the same difference.
freeCodeCamp
freecodecamp.org › news › how-to-round-numbers-up-or-down-in-python
Python Round to Int – How to Round Up or Round Down to the Nearest Whole Number
May 24, 2022 - Let's see an example. import math x = 5.57468465 print(math.floor(x)) # 5 · As expected, we passed in the number to be rounded down to the math.floor() method: math.floor(x). The x variable has the number 5.57468465 stored in it.
Replit
replit.com › home › discover › how to round down in python
How to round down in Python
February 6, 2026 - When you divide a number by 1 using this operator, Python performs floor division, which effectively rounds the number down to the nearest whole number.
Altcademy
altcademy.com › blog › how-to-round-down-in-python
How to round down in Python - Altcademy.com
June 13, 2023 - This is effectively rounding down the number. To use the math.floor() function, you first need to import the math library. Here's an example of how you can round down a number using math.floor():
Top answer 1 of 12
220
int(x)
Conversion to integer will truncate (towards 0.0), like math.trunc.
For non-negative numbers, this is downward.
If your number can be negative, this will round the magnitude downward, unlike math.floor which rounds towards -Infinity, making a lower value. (Less positive or more negative).
Python integers are arbitrary precision, so even very large floats can be represented as integers. (Unlike in other languages where this idiom could fail for floats larger than the largest value for an integer type.)
2 of 12
87
One of these should work:
import math
math.trunc(1.5)
> 1
math.trunc(-1.5)
> -1
math.floor(1.5)
> 1
math.floor(-1.5)
> -2
Python Pool
pythonpool.com › home › blog › best ways to round down numbers in python
Best Ways to Round Down Numbers in Python - Python Pool
January 1, 2024 - We have not passed any value to ... in this example. As a result, it takes the default value, i.e., 0. We can see that the integer number remains as it is, 12.7 is rounded up to 13, and 12.4 is rounded down to 12.
Note.nkmk.me
note.nkmk.me › home › python
Round Up/Down Decimals in Python: math.floor, math.ceil | note.nkmk.me
January 15, 2024 - Convert a string to a number (int, float) in Python · print(int('10')) # 10 # print(int('10.123')) # ValueError: invalid literal for int() with base 10: '10.123' print(int('FF', 16)) # 255 ... Considering negative values, there are four ways to round up and down. ... print(math.floor(10.123)) # 10 print(math.floor(-10.123)) # -11 print(math.ceil(10.123)) # 11 print(math.ceil(-10.123)) # -10 print(int(10.123)) # 10 print(int(-10.123)) # -10 ... For example, you can define a custom function that rounds toward infinity as follows.
W3Schools
w3schools.com › python › ref_func_round.asp
Python round() Function
Python Examples Python Compiler Python Exercises Python Quiz Python Challenges Python Server Python Syllabus Python Study Plan Python Interview Q&A Python Bootcamp Python Certificate Python Training ... The round() function returns a floating point number that is a rounded version of the specified number, with the specified number of decimals.
W3Schools
w3schools.com › python › ref_math_floor.asp
Python math.floor() Method
Python Examples Python Compiler Python Exercises Python Quiz Python Challenges Python Server Python Syllabus Python Study Plan Python Interview Q&A Python Bootcamp Python Certificate Python Training ... # Import math library import math # Round numbers down to the nearest integer print(math.floor(0.6)) print(math.floor(1.4)) print(math.floor(5.3)) print(math.floor(-5.3)) print(math.floor(22.6)) print(math.floor(10.0)) Try it Yourself »
LabEx
labex.io › tutorials › python-how-to-round-down-a-float-to-an-integer-in-python-415546
How to round down a float to an integer in Python | LabEx
This ensures that you access the correct element in the data structure. import numpy as np ## Example of rounding down a float to an integer index data = [10.2, 15.7, 8.4, 12.9] index = int(np.floor(3.7)) print(data[index]) ## Output: 12.9
Reddit
reddit.com › r/learnpython › how to round numbers below?
r/learnpython on Reddit: How to round numbers below?
November 29, 2024 -
I wrote a code in which a variable is a number, but Im asked to always round it below. How do I do this, since "round" will round it to the nearest?
GeeksforGeeks
geeksforgeeks.org › python › floor-ceil-function-python
floor() and ceil() function Python - GeeksforGeeks
Python’s math module provides many useful mathematical functions, including floor() and ceil(), which are commonly used for rounding numbers. floor(): Rounds a number down to the nearest integer. Example: floor() of 3.3 will be 3.
Published January 16, 2026
Vultr Docs
docs.vultr.com › python › third-party › numpy › floor
Python Numpy floor() - Round Down Values | Vultr Docs
November 14, 2024 - The code outputs 3.0. numpy.floor() rounds down 3.7 to the nearest whole number, which is 3.
TradingCode
tradingcode.net › python › math › round-decimals
How to round decimal places up and down in Python? • TradingCode
Original values: [22.459, 5.963, 2.335, -1.569, -0.019, -22.3] Rounded up and down to 2 decimals: [22.46, 5.96, 2.33, -1.57, -0.02, -22.3] Rounded up to 2 decimals: [22.46, 5.97, 2.34, -1.56, -0.01, -22.3] Rounded down to 2 decimals: [22.45, ...
CodeRivers
coderivers.org › blog › round-down-in-python
Python's Rounding Down: Concepts, Usage, and Best Practices - CodeRivers
January 29, 2025 - ... Rounding down is based on the concept of the floor function in mathematics. Given a real number (x), the floor function (\lfloor x \rfloor) returns the greatest integer less than or equal to (x). For example, (\lfloor 3.7 \rfloor = 3), (\lfloor -2.3 \rfloor = -3).
Derludditus
derludditus.github.io › ClaudePython › how-to-round-down-in-python.html
How to round down in Python
Python's floor() function from the math module rounds negative numbers down to the next lowest integer. For example, floor(-3.2) gives you -4 since that's the next integer down on the number line.
CodeGenes
codegenes.net › blog › how-to-round-down-in-python
Mastering Rounding Down in Python — codegenes.net
The math.floor() function from the Python math module is a straightforward way to round down a number. It takes a single argument, which can be an integer or a floating-point number, and returns the largest integer less than or equal to the given number. import math # Example with a positive number num1 = 3.7 ...
GeeksforGeeks
geeksforgeeks.org › python › how-to-round-numbers-in-python
How to Round Numbers in Python? - GeeksforGeeks
July 15, 2025 - For example, Input is 3.5 then Output should be 4. Python’s built-in round() function rounds a number to a given precision.