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How to Convert All MP3 Files to WAV using Python

Audio file formats can vary in their encoding and compression methods, and sometimes you might need to convert between formats to suit different purposes. In this tutorial, we’ll explore how to convert a collection of MP3 files to the WAV format using Python.


MP3 and WAV are two common audio file formats. MP3 files are compressed to reduce file size, making them ideal for online streaming and sharing. On the other hand, WAV files are uncompressed and offer high-quality audio, making them suitable for professional use or when no loss of audio quality is acceptable.

Understanding the Code

We’ll be using Python along with the pydub library to perform the conversion.

Step 1: Installing Required Libraries

Before we proceed, make sure you have the pydub library installed. You can install it via pip:

pip install pydub

Step 2: Importing Necessary Libraries

import os
from pydub import AudioSegment

We import the required libraries:

  • os for file operations.
  • AudioSegment from pydub for audio manipulation.

Step 3: Converting MP3 to WAV

def mp3_to_wav(mp3_file):
sound = AudioSegment.from_mp3(mp3_file)
wav_file = os.path.splitext(mp3_file)[0] + ".wav"
sound.export(wav_file, format="wav")
print(f"Converted {mp3_file} to {wav_file}")

def convert_all_mp3_to_wav():
mp3_files = [f for f in os.listdir() if f.endswith(".mp3")]

for mp3_file in mp3_files:

Here, the mp3_to_wav function takes an MP3 file path, reads the audio, and exports it as a WAV file. The convert_all_mp3_to_wav function finds all MP3 files in the current directory and converts them to WAV one by one.

Step 4: Running the Conversion

if __name__ == "__main__":

By running this script, all MP3 files in the current directory will be converted to WAV.


In this tutorial, we’ve demonstrated how to convert a collection of MP3 files to the WAV format using Python. This can be useful for various purposes such as preparing audio files for analysis, processing, or compatibility with different systems.

Experiment with different audio file formats and explore the capabilities of Python libraries like pydub to efficiently handle audio manipulation tasks.

Happy coding!