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FLAC to MP3

Make a smaller MP3 listening copy of a lossless FLAC recording. Your FLAC original stays unchanged, so you can keep it for archiving or later edits.

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

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 FLAC to MP3

    1. Choose your FLAC file from your device. The page checks the extension, file header and readable duration.
    2. The output format is fixed to MP3 for this converter.
    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.

    Keep the FLAC original for future edits

    FLAC compresses audio without discarding the samples it stores. MP3 uses perceptual compression and discards some information. The MP3 copy can be easier to share, but converting it back to FLAC will not recover the original samples.

    Choose the MP3 bitrate by listening to the result on the equipment you use. A high sample rate does not repair source limitations and can increase processing work. The output channel setting can downmix stereo to mono when that suits a voice recording.

    A practical workflow

    Use FLAC to MP3 when a receiving app requests MP3. Convert a short recording first, listen to the loudest and quietest passages, and keep both the source and the result until you have checked playback.

    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

    Can I recover FLAC quality from the MP3 later?

    No. MP3 discards information. Converting the MP3 back to FLAC only stores the decoded MP3 signal in a lossless container. Keep the original FLAC.

    Is my FLAC 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 FLAC to MP3.

    • Audio Converter

      Convert between common audio formats with bitrate and channel controls.

    • MP3 Compressor

      Reduce MP3 bitrate and compare the output size before downloading.

    • MP3 Cutter

      Trim MP3 audio with waveform positioning and exact time fields.