# Add zeros to a float after the decimal in Python

Wed Jun 22 20221 min read

## Add zeros to a float after the decimal in Python#

Use the `format()` function to add zeros to a float after the decimal, e.g. `result = format(my_float, '.3f')`. The function will format the number with exactly N digits following the decimal point.

main.py
```Copied!```my_float = 3.0

result = format(my_float, '.3f')

print(result)  # 👉️ '3.000'
print(type(result))  # 👉️ <class 'str'>
``````

We used the format function to add zeros to a float after the decimal.

The function takes a value and a format specifier and converts the value to a formatted representation according to the provided format specifier.

The `f` type in the format specifier stands for fixed-point notation.

main.py
```Copied!```my_float = 3.0

result_1 = format(my_float, '.3f')
print(result_1)  # '3.000'

result_2 = format(my_float, '.4f')
print(result_2)  # '3.0000'

result_3 = format(my_float, '.6f')
print(result_3)  # '3.000000'
``````

Notice that the value the `format()` function returns is a string.

This is necessary because Python doesn't keep any non-significant, trailing zeros around.

main.py
```Copied!```my_float = 3.00000000
print(my_float)  # 👉️ 3.0
``````

An alternative approach is to use a formatted string literal.

main.py
```Copied!```my_float = 3.0

result = f'{my_float:.3f}'

print(result)  # 👉️ '3.000'
``````

Formatted string literals (f-strings) let us include expressions inside of a string by prefixing the string with `f`.

main.py
```Copied!```my_str = 'is subscribed:'

my_bool = True

result = f'{my_str} {my_bool}'

print(result)  # 👉️ is subscribed: True
``````

Make sure to wrap expressions in curly braces - `{expression}`.

We are also able to use the format specification mini-language in expressions in f-strings.

main.py
```Copied!```my_float = 3.2

result_1 = f'{my_float:.3f}'
print(result_1)  # 👉️ '3.200'

result_2 = f'{my_float:.5f}'
print(result_2)  # 👉️ '3.20000'

result_3 = f'{my_float:.6f}'
print(result_3)  # 👉️ '3.200000'
``````
Use the search field on my Home Page to filter through my more than 1,000 articles.