A Free Audio Converter That Runs in Your Browser

AudioConverter.co converts audio and video files to 12 audio formats: MP3, WAV, FLAC, M4A, AAC, OGG, Opus, AIFF, WMA, AC3, AMR and MP2. There is no account to create and nothing to install, on a computer or a phone.

Drop in a file up to 50 MB, pick the format you need and press Convert. Conversion happens on our servers with FFmpeg, so it doesn't use your device's battery or processor, and short files are usually ready within seconds.

How to Convert Audio or Video Files Online

Converting files with AudioConverter.co is a simple, three-step process:

Upload File: Drag and drop your audio or video file onto the upload box above, or click the 'Choose File' button to browse your device.
Select Output Format: Choose the target audio format (e.g., MP3, WAV, AAC) you want from the 'Convert to:' dropdown list.
Convert & Download: Click the 'Convert' button. Once the conversion finishes, a 'Download' button will appear. Click it to save your new audio file.

Wide Format Support

Our tool is designed to handle a wide variety of input files:

Video Inputs Accepted: We extract the audio from MP4, MOV, WEBM, MKV, AVI, WMV, FLV, MPEG/MPG and 3GP videos. The video track is discarded; you download audio only.
Audio Inputs Accepted: MP3, WAV, FLAC, M4A, AAC, OGG, Opus, AIFF, WMA, AC3, AMR and MP2. Copy-protected (DRM) files, such as Apple Music downloads, can't be converted.
Audio Outputs Supported: Convert *to* all the essential audio formats you need, including MP3, WAV, AAC, M4A, FLAC, OGG, AIFF, WMA, Opus, AC3, AMR, and MP2. Visit our specific converter pages for more details on each format.

Why Use AudioConverter.co? Key Features

Free: No charges, no watermarks, and no daily limit on the number of files you convert. Each file can be up to 50 MB.
Private: Your upload is deleted as soon as the conversion succeeds, and converted files are deleted automatically within about an hour. We don't listen to or keep your audio.
No Registration: Open the page and convert; there is no account or email address to hand over.
Nothing to Install: It works in any modern browser on Windows, macOS, Linux, iPhone and Android.
Sensible Quality Settings: There are no settings to get wrong. Lossy formats use high-quality defaults (MP3, AAC, M4A and WMA at 192 kbps, Opus at 128 kbps), WAV and AIFF are 16-bit PCM, and FLAC is lossless.
Video to Audio: Pull the soundtrack or voice-over out of a video, for example MP4 to MP3 or MOV to MP3.
Questions or Problems: Email hello@audioconverter.co or read more about how the converter works.

Why Might You Need to Convert Audio Files?

There are many reasons why you might need to change an audio file's format:

Compatibility: Different devices (smartphones, car stereos, old MP3 players) or software (video editors, audio tools) support different formats.
File Size: You might need to reduce file size for emailing, uploading to cloud services, or saving space on portable devices (e.g., converting WAV to MP3 or Opus).
Quality Requirements: You might need an uncompressed format (WAV, AIFF) for editing or a high-quality lossless format (FLAC) for archiving.
Specific Applications: Some applications or platforms might recommend or require a specific format (e.g., OGG for some web applications, AAC for Apple platforms).
Extracting Audio from Video: Saving just the soundtrack or voiceover from a video file.

Whatever the reason, our free online audio converter provides a simple and effective solution.

Popular Conversions

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Explore Specific Converters

Need detailed information or want to set a different default format? Visit our specific converter pages: