Have a few voice memos, song clips, or podcast segments you want to stitch into one continuous file? This audio merger joins them in your browser: drop in your files, drag them into the right order, choose how the clips connect, and export a single track. No uploads, no accounts, and it works with the formats you already have.

How to merge audio files

Add two or more audio files by dropping them in or clicking to upload. Each one appears in a numbered list showing its length. The order in the list is the order they’ll play in the final file, so use the up and down arrows to arrange them exactly how you want.

Pick how the clips should connect, then press Preview to hear the result before committing. When it sounds right, choose MP3 or WAV and press Merge & Download to save the combined track.

Files of different formats and sample rates mix together fine. You can merge an MP3, a WAV, and an M4A into one file without converting them first.

Choosing how clips connect

The Between clips setting controls the transition from one clip to the next:

• No gap joins them back to back, with no silence in between. Best for continuous speech or segments that should flow straight into each other.
• Silence inserts a pause of the length you choose between each clip. Useful for separating distinct tracks, chapters, or spoken sections so they don’t run together.
• Crossfade overlaps the end of one clip with the start of the next, fading one out as the other fades in. This gives a smooth blend, which is what you want for music or any transition that would sound abrupt with a hard cut.

For crossfade, the overlap is automatically limited so it never exceeds half of the shorter clip, which keeps short clips from disappearing into the blend.

Preview before you download

Merging can involve several files and a fair amount of audio, so it’s worth checking the result first. The Preview button renders the full merged track and plays it back in place, letting you scrub through and confirm the order and transitions are right. If something’s off, reorder or change the transition and preview again. The download reuses the same render, so you’re not processing twice.

Export as MP3 or WAV

When you’re happy with the preview, save the merged track. MP3 is re-encoded in your browser, plays everywhere, and lets you pick a bitrate: 128 kbps for speech, 192 kbps as a balanced default, or 320 kbps for the best quality. WAV is uncompressed and lossless, which is the right choice if you plan to edit the merged file further.

Everything runs in your browser

Your files are decoded, combined, and encoded entirely on your own device using the Web Audio API. Nothing is uploaded to a server or stored online, so merging private recordings, interview clips, or unreleased music stays completely private.

Need to prepare your clips first? The Audio Cutter trims each file down to the part you want before merging, and the Audio Converter changes formats if a file won’t decode. To record new segments to merge, use the Voice Recorder.