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Audio joiner

Join several recordings into one file, with an optional gap or crossfade between them.

  • Free, no account
  • No watermark
  • Files deleted after 15 minutes

Drop files here, paste, or

MP3, WAV, M4A, AAC, OGG, OPUS, FLAC, WMA, AIFF, AMR

    Settings

    2 to 12 files, 100 MB together, up to 60 minutes each.

    Your file is deleted from our server as soon as the result is made, and the result 15 minutes later.

    Result

    Preview before you download

    Add your files to begin. The result shows here.

    Joining the parts of an episode?

    Upload every part of a video episode to Studio. It joins them and cuts the gaps.

    Edit a full recording free
    00:20How it works

    How to join audio files

    1. Add 2 to 12 filesThey can be different formats. The total length shows under the list.
    2. Put them in orderUse Up and Down. The first file in the list plays first.
    3. Add a gap or a crossfadeA gap is silence between files. A crossfade overlaps the end of one with the start of the next.
    4. Join and downloadOne file. By default it takes the format of your first file.
    00:30The details

    What goes in and what comes out

    Accepts
    MP3, WAV, M4A, AAC, OGG, OPUS, FLAC, WMA, AIFF, AMR
    Returns
    One file: MP3, WAV, M4A, FLAC or OGG
    Limits
    2 to 12 files, 100 MB together, up to 60 minutes each.
    Privacy
    Your file is uploaded to our processing server over an encrypted connection, worked on, and deleted. The uploaded file is removed as soon as the result is ready; the result is removed 15 minutes later. Nobody looks at it and it is never used for anything else.
    Cost
    Free. No account, no watermark, no trial that runs out.
    00:35Worth knowing

    Getting a good result

    Gap or crossfade

    Between spoken segments, such as an intro and an interview, a half-second gap sounds natural. Between pieces of music, a crossfade of one to two seconds hides the join. Leave both at zero to butt the files together, which suits parts of one continuous recording.

    Different formats and rates

    Files recorded on different devices differ in sample rate and channels. They are all converted to 48 kHz stereo before joining, so the pitch and speed of each stay correct.

    Level them first

    If one part is louder than another, the join will be obvious. Run each through the loudness normalizer at the same target first, then join.

    00:40Questions

    Audio joiner: common questions

    How many files can I join?

    From 2 to 12, up to 100 MB together and 60 minutes each.

    Can I join MP3 and WAV together?

    Yes. Any mix of the accepted formats.

    Is quality lost?

    WAV and FLAC results lose nothing. An MP3, M4A or OGG result is encoded once, at the bitrate you choose.

    Can I trim a file before joining?

    Trim it first with the audio trimmer, then add the trimmed file here.

    What people do next

    All audio tools

    Audio loudness normalizer

    Bring a recording to a standard loudness, such as -16 LUFS for podcasts, and see the measured before and after.

    Audio fade tool

    Add a fade in, a fade out, or both to an audio file, with separate lengths.

    Audio converter

    Convert audio between MP3, WAV, M4A, FLAC and OGG, with bitrate, sample rate and mono or stereo.

    Audio to video converter

    Turn a podcast or song into a video by adding a cover image, with an optional moving waveform.

    Recording a video podcast?

    Upload the raw recording. Studio cuts the ums, retakes and long pauses, adds captions and makes short clips. 30 free minutes, no card.

    Edit my first video free