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Free Online Audio Converter

Convert audio files to MP3, WAV, M4A, FLAC and more—one file or a batch—directly in your browser. Free, no sign-up, and your files never leave your device.

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    Files stay on your device. Download before leaving this page.

    Processed in your browser · 15 import and export formats · Batch convert up to 10 files

    Why Choose AudioMuse to Convert Audio Online?

    Convert audio without uploads, accounts or unnecessary steps. AudioMuse runs directly in your browser and gives you the formats and batch controls you need to finish the job quickly.

    Private Browser-Based Processing

    Your audio is converted locally on your device instead of being uploaded to AudioMuse for processing. Your files stay with you from start to finish.

    Free With No Sign-Up

    Open the online audio converter and start immediately. No account, no software installation and no credit card required.

    Convert More Than One File at Once

    Batch convert up to 10 files with one output format. Each file processes separately, so one failure won’t stop the queue. Download files individually or as a ZIP.

    15 Audio Formats Supported

    Convert MP3, WAV, M4A, FLAC, AAC, OGG, Opus, M4R and other common audio formats for playback, editing, sharing and storage.

    Control the Output, Not Just the Format

    Choose the format you need and, for supported lossy formats, adjust bitrate or target size before downloading the converted copy.

    Convert Audio to the Right Format for Any Use

    Not sure which format to choose? Start with what you plan to do next. Converting audio can change compatibility, file size and compression, but it cannot restore quality that is already missing from the source.

    Make an everyday listening copy

    Choose MP3, M4A or AAC when compatibility and a smaller listening file matter more than keeping an uncompressed production master.

    • Works across common players and devices
    • Practical for messages, uploads and feedback
    • Keep the original if you may edit again
    Originalpodcast.wavNew copypodcast.mp3

    A smaller copy for sharing

    Convert Your Audio Now

    Batch Convert Audio Files in Your Browser

    Add up to 10 recordings, choose one output format and let the queue handle each file separately. Names stay recognizable, completed files remain available if another item fails, and you can download everything as a ZIP.

    • Up to 100 MB per file and 300 MB per batch
    • One output format applied consistently across the queue
    • Individual downloads or one ZIP for completed files
    Batch Convert Audio
    Batch Convert3 files · MP3 output
    • interview.wavComplete
    • voice-note.m4aConverting
    • demo.flacQueued
    Convert all to MP3Download ZIP
    Convert files separately, keep their names and collect the completed results in one download.
    Output bitrate
    192 kbps
    Target reduction
    50%
    Target size
    5 MB
    These controls are available for MP3, M4A, AAC, OGG and Opus output. Lower settings can reduce file size, but may also reduce sound quality.

    Adjust Quality and File Size While Converting Audio

    When converting to MP3, M4A, AAC, OGG or Opus, you can also adjust bitrate or target file size before export. These controls apply to the converted copy and help you meet playback, sharing or upload requirements.

    • Use bitrate when you know the delivery requirement
    • Use target size when an upload form has a hard limit
    • Keep the original before making a smaller listening copy

    If you want to reduce file size without changing the audio format, use the Audio Compressor.

    How to Convert Audio Files Online

    From source file to a new listening, editing or archive copy in three connected steps.

    1. Add your audio

      Drop in one file, or switch to Batch Convert for up to 10. Your media remains on this device.

    2. Choose the output

      Select MP3, WAV, M4A, FLAC or another supported format. Open Advanced options only when you need size controls.

    3. Convert and download

      Save each result separately or collect a completed batch in one ZIP. The source file is never overwritten.

    Know the format you have and the format you need? Open a focused converter with the output already selected.

    Audio Converter FAQs

    Answers about converting audio online, supported formats, batch conversion, audio quality, file size and private browser-based processing.

    How do I convert audio files online?

    Add an audio file, choose your output format, then select Convert. When the conversion is complete, download the new file. You can convert to MP3, WAV, M4A, FLAC and other supported audio formats directly in your browser.

    Can I batch convert multiple audio files at once?

    Yes. The batch audio converter supports up to 10 files, with a maximum of 100 MB per file and 300 MB per batch. Choose one output format for the batch, then download converted files individually or together as a ZIP.

    Which audio formats does the converter support?

    AudioMuse can import and export MP3, WAV, M4A, FLAC, AAC, OGG, Opus, AIFF, WMA, AMR, MP4, M4B, M4R, AIF and AIFC. MP4 files must contain an audio track, and video is not included in the converted output.

    Is this online audio converter free?

    Yes. You can convert and download audio files for free without creating an account or installing software.

    Are my audio files uploaded when I convert them?

    No. Audio processing happens locally in your browser rather than uploading your files to AudioMuse for conversion. Keep the browser tab open until the conversion is complete.

    Will converting MP3 to WAV improve audio quality?

    No. Converting MP3 to WAV does not restore audio detail already removed by lossy compression. WAV can prevent another lossy encoding step during future editing, but the converted file will usually be much larger.

    View all 10 questionsShow fewer questions
    Can I convert audio without losing quality?

    Yes, if the source allows it. Convert to WAV, FLAC or an AIFF-family format to avoid adding another lossy compression step. However, converting an existing MP3 or other lossy file to a lossless format cannot restore quality already lost.

    Can I change audio quality or file size while converting?

    Yes. When converting to MP3, M4A, AAC, OGG or Opus, Advanced options let you adjust bitrate, reduce the file by a percentage or set a target file size. If you only need to make an audio file smaller without changing its format, use the Audio Compressor.

    Why is my converted audio file larger than the original?

    File size depends on the output format and encoding settings. Converting compressed audio such as MP3 to WAV or AIFF can create a much larger file because these formats store audio without lossy compression.

    Why won't my audio file convert?

    Make sure the file is no larger than 100 MB, is not empty and uses a supported audio format. Conversion may fail with damaged or protected files, unsupported codecs, or MP4 files that do not contain an audio track.

    Ready when your files are

    Your Free Online Audio Converter Is Ready

    Convert audio to MP3, WAV, M4A, FLAC and more directly in your browser. No sign-up, no software to install—just choose a format and download your new file.

    Start Converting Audio