100% client-side — files never leave your device

Free online audio converter

Convert M4A, AAC, OGG, Opus, FLAC, WebM and AIFF to MP3 or WAV — with bitrate, sample rate and channel control. Entirely in your browser: nothing is uploaded.

Drop audio files hereor click to browse — nothing leaves your browser

MP3 · WAV · M4A · AAC · OGG · Opus · FLAC · WebM · AIFF

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        How to convert an audio file in your browser

        1. Drop your files. Decoding uses the same media engine your browser uses to play audio, so no codec download is needed and nothing is uploaded. Which formats decode depends on your browser.
        2. Choose the output. MP3 for sharing and portable players, WAV when the audio will be edited or mastered further. Set the bitrate, sample rate and mono or stereo before converting.
        3. Convert and download. Batches are processed one file after another inside the tab; a single result downloads directly and multiple results arrive as a ZIP.

        All audio conversions

        MP3 to WAVWAV to MP3M4A to MP3M4A to WAVAAC to MP3AAC to WAVOGG to MP3OGG to WAVOpus to MP3Opus to WAVFLAC to MP3FLAC to WAVWebM audio to MP3WebM audio to WAVAIFF to MP3AIFF to WAV

        Frequently asked questions

        Are my audio files uploaded?

        No. Decoding uses your browser’s own media codecs and encoding runs in the same tab, so recordings, voice notes and unreleased music never leave your device.

        Which formats can I convert from?

        MP3, WAV, M4A, AAC, OGG, Opus, FLAC, WebM audio and AIFF. Output is MP3 or WAV — the two formats every application on earth can open.

        What bitrate should I choose for MP3?

        192 kbps is transparent for most listeners and material. Use 320 kbps for music you care about, 128 kbps for spoken word, and 96 kbps only when file size dominates.

        Why does an M4A or FLAC file fail on my browser?

        Decoding relies on the codecs your browser ships. Chrome and Edge handle M4A/AAC and FLAC; Firefox and Safari vary by platform. If a file refuses to decode, try it in Chrome.

        Does converting lossy to lossy lose quality?

        Yes — re-encoding MP3 to MP3 or M4A to MP3 goes through a second lossy pass. Convert from the highest-quality source you have, and prefer WAV output when the file will be edited further.

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