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Audio Converter

Change an audio file to MP3, WAV, M4A, OGG or FLAC without sending it to a server. Set the output format, sample rate and channels, then listen before saving.

Audio and transcripts stay on your device. Processing runs in your browser.
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Choose a file

MP3, WAV, M4A, OGG, FLAC. Up to 100 MiB per file (50 MiB on touch devices), 1800 seconds. Decoded audio memory limits also apply.

    Settings

    Bitrate applies to MP3 and AAC. WAV uses 16-bit PCM; FLAC is lossless. OGG uses quality-based encoding.

    Result

    Your result will appear here

    Add a file, pick your settings, then select Convert audio.

    No account or daily usage quota. File and device limits protect your browser from running out of memory.

    Processing audio

    Checking your settings…

    How to use Audio Converter

    1. Choose a supported audio file from your device. The page checks the extension, file header and readable duration.
    2. Choose MP3, WAV, M4A, OGG or FLAC as the output.
    3. Set the sample rate and mono or stereo channels. Set a bitrate for MP3 or M4A output.
    4. Press Convert audio. The processing engine loads only when needed.
    5. Play the result and download it when it suits your needs.

    Choosing a format for the job

    MP3 suits players and sharing services that need broad format support. M4A here stores AAC audio. OGG stores Vorbis audio. WAV uses uncompressed 16-bit PCM, while FLAC stores audio losslessly with compression.

    Converting a lossy recording to WAV or FLAC preserves the decoded sound but cannot restore information lost in an earlier encode. Keep the original when you may need to edit the recording again.

    A practical workflow

    If a podcast editor requests WAV, convert your recording to WAV at the project’s sample rate. For a listening copy, choose MP3 and compare a short passage before keeping the result.

    To remove an unwanted section from an MP3 copy, open MP3 Cutter. To reduce the bitrate of an existing MP3, use MP3 Compressor.

    Before you download

    • Only a readable, supported audio stream can be converted. Encrypted files and damaged media are unsupported.
    • Large files may exceed browser memory even when their compressed size fits the displayed limit.
    • Changing format does not guarantee a smaller file or better sound. Output tags and artwork may differ from the source.

    Frequently asked questions

    Which output format should I choose?

    Use MP3 for sharing, WAV for editing software that expects PCM, or FLAC when you want lossless compression. Check the receiving app before choosing M4A or OGG.

    Is my audio file uploaded?

    No. The file is read and processed in your browser. The audio engine downloads from this site, but the selected media is not sent to a server.

    Can I choose mono output?

    Yes. Choose Mono under Channels. This downmixes the recording into one channel; it does not isolate a voice or remove background music.

    Why can a file fail below the size limit?

    Compressed size does not describe decoded memory use. Duration, sample rate, channels, codec support and available browser memory also affect whether processing succeeds.

    Often used together with Audio Converter.

    • MP3 Compressor

      Reduce MP3 bitrate and compare the output size before downloading.

    • MP3 Cutter

      Trim MP3 audio with waveform positioning and exact time fields.

    • Audio Joiner

      Merge supported recordings in order with common output encoding settings.