Free Audio Converter Online

Convert video/audio absolutely free to MP3, AAC, WMA, and more.

Download App to enjoy more features without limits!

Easily Convert Audio in 3 Steps

1Upload the file that you want to convert.

2Select an audio format as the output format.

3Start converting the file on your computer.

Convert Audio

Convert Audio Files to Other Popular Audio Formats

This web app allows you to transform audio files to MP3, M4A, WMA or other audio formats keeping the high audio quality. It supports converting most popular formats including MP3 to WAV, FLAC to MP3, AAC to M4R, etc. Here are the audio formats supported by this free online audio converter.

Supported Formats: MP3, AAC, AC3, WMA, WAV, AIFF, FLAC, MKA, M4A, M4B, M4R, etc.

Adjust Audio Quality, Sample Rate and Bitrate Effortlessly

This audio converter is able to meet your needs for different usages through customizable settings. It provides multiple options for you to adjust output audio quality, sample rate, audio bitrate, audio channel and more. Those flexible audio settings make your conversion under full control. And you can safely play the converted audio on all devices such as smartphones, tablets, computers (Windows, Mac and Linux supported), and more.

Adjust Settings
Extract Audio From Video

Extract Audio from Video files with High Quality

Free Audio Converter Online can directly extract audio from video files like movies, music videos, homemade recordings, interviews, and more, and save the soundtracks fast as the most popular audio formats like MP3, AAC and more. Therefore, it would be far better than an audio recorder which lets you grab the sound in a fuss-free way. This audio converter not only facilitates the efficiency, but also reduces the possibility of the loss of quality.

Full of Great Features

Aiseesoft Audio Converter Online offers so many excellent and useful features that help you convert your files better. You can enjoy the quality output, easy operations, and safe conversion process.

  • Easy to Use

    Easy to Use

    With simple operations, you can convert your audio files online quickly.

  • Web-based


    You can enjoy a great converting experience without downloading software.

  • High Quality

    High Quality

    You can adjust the output quality of the audio according to your need.

  • No Plug-ins/Ads

    No Plug-ins/Ads

    You don't need to suffer from annoying plug-ins and ads when converting.

  • Preview

    Preview Output

    You can preview the output audio file to confirm the result before saving.

  • Privacy

    Privacy Protected

    Your Privacy is highly protected. All uploaded data will be deleted after.

Limit Free Trial Version Logged-in Account Pro Version

File expiration dates

-- 7 days No limit

File number

2 files/24 hours 10 files/24 hours No limit

File size

<50 MB <100 MB No limit

Supported formats

11 for output 11 for output 1000+

Resolution options

5 5 10

Trim audio

Ultrafast speed


Frequently Asked Questions About Audio Converter

What Our Users Say

  • Claire



    This is the best free audio converter that I've ever used. There is no ads, no virus, or even No Sign-up. It also lets you alter the bitrate, sample rate and channels with presets.

  • Alex



    This is the excellent video to MP3 audio converter tool. It provides a simple way to convert my video files to MP3 in just a few clicks.

  • George



    This is just what I've been looking for among various audio converters varied in quality. In this way, I can change the bitrate and sample rate before uploading my converted music to YouTube.

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