MP3Conv

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Crossfade Joiner

Glue two tracks together with a smooth crossfade — perfect for DJ-style transitions, mixtapes and seamless playlists.

Track A — fades out

Track B — fades in

The last N seconds of Track A fade out while the first N seconds of Track B fade in. Try 8 s for music; 1–2 s for podcasts.

About this crossfade joiner

A crossfade is the simplest DJ trick: as track A fades out, track B fades in over the same period, so there's never a moment of silence between them. This tool takes two audio files, applies a clean equal-power crossfade with the duration you set, and writes a single combined output.

We don't analyse or index your files.

How to crossfade two tracks

  1. 01

    Drop in track A

    The first song — the one that fades out.

  2. 02

    Drop in track B

    The second song — the one that fades in.

  3. 03

    Pick the overlap and render

    5–15 seconds is typical for music transitions; 1–2 seconds for spoken word.

Why use this crossfade tool

  • Clean equal-power crossfade (no volume dip in the middle)
  • Adjustable overlap from 0.5 s to 30 s
  • Output keeps a clean MP3 at 192k
  • Free, private, no install
  • No watermark, no signup, no length cap
  • Great for mixtapes, podcast intros / outros and DJ sets

Crossfade FAQ

What's a good crossfade length?

For full-song transitions, 8–12 seconds usually feels musical. For spoken-word edits, 0.5–2 seconds is plenty. Above 20 seconds you start losing the second track's intro.

Will the audio quality drop?

It's re-encoded to MP3 at 192k. For maximum-quality DJ work, prefer FLAC inputs and ask us if you'd like a FLAC-output version of this tool.

Will the BPMs match automatically?

No — this is a straight crossfade, not a beatmatched DJ mix. For BPM matching, use the Speed Changer or Pitch Shifter on one track first to align tempos.

Can I crossfade more than two tracks?

Right now it does pairs. Run the result back through with a third track for a 3-track mix.

Cut, join, trim, fade

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