Merge WAV Files Online — Free WAV Merger

WAV is the format recorders, audio editors, and voice memo apps produce when you ask for full quality — and it grows fast: one hour of stereo audio is well over 600 MB. This guide shows how to merge WAV files into a single track with the audio merger on the home page. Everything runs in your browser, your files never leave your device, and there is no size quota because there is no upload at all.

How to merge WAV files

1. Add your files. Open the merging tool and click Browse — or drag your WAV files onto the drop zone. MP3, M4A, OGG, FLAC, and AAC are accepted alongside WAV.
2. Set the order. Drag the rows, use the ↑ / ↓ buttons, or click Sort by name (1, 2 … 10) when your recorder already numbered the takes.
3. Trim what you don't need. Click the scissors button on any row, enter a start and end point in seconds, and press Apply. A small chip marks which files are trimmed.
4. Shape each join. Between two files, choose Direct to keep both clips exactly as recorded, Add pause to insert 0.5–10 s of silence, or Crossfade to overlap the end of one clip with the start of the next with a smooth fade.
5. Audition before you export. The ▶ button on each row plays that file, and every junction has its own listen button so you can check the transition.
6. Export. Click Merge & Download WAV for a WAV result, or Merge & Download MP3 (192 kbps) when you need a smaller file.

What to expect when working with WAV

• Files are large. Uncompressed stereo WAV takes roughly 10 MB per minute, half that for mono. An hour-long stereo merge produces a file of about 600–700 MB, so plan your storage.
• Your browser does the work. Decoding and merging happen in browser memory. Batches of up to about 30 files or 3 hours of audio run reliably on a typical computer; for longer projects, split the export into parts.
• Give it a moment. A few files finish in seconds. As a rule of thumb, an hour of audio takes around three minutes to process on an average computer.
• One working sample rate. Files are decoded to a single working sample rate, so you can combine 44.1 kHz and 48 kHz recordings in the same merge without converting them first.
• The export is 16-bit PCM. The WAV you download is standard 16-bit PCM — the flavor every player and editor opens. If your sources are 16-bit WAV, the most common case, the merged file keeps that resolution.

WAV or MP3 for the result?

Keep WAV when the file is headed back into an editor or an archive and size doesn't matter. Pick MP3 when the file goes to chat apps, email, or a phone — at 192 kbps, stereo audio stays clear at a fraction of the size. And if your task is more about removing passages than joining whole takes, the companion guide on cutting and merging MP3 files walks through the trimming workflow in detail.

Frequently asked questions

Will merging WAV files affect the sound quality?

All processing happens locally in your browser — nothing is uploaded. Joining doesn't pass your audio through a compressed intermediate format: the WAV you download is uncompressed PCM written at 16 bits per sample, at your files' sample rate. Sixteen-bit sources come out at the same resolution; 24-bit sources are written to the 16-bit WAV standard that virtually all players use.

Is there a limit on file size or number of files?

There is no configured limit and no quota, because your files are never uploaded. The practical ceiling is your device's memory — as a guideline, keep batches to roughly 30 files or 3 hours of audio and split larger projects into several exports.

Can I merge WAV with MP3 or M4A files?

Yes. Any input your browser can decode can join the merge; the export is a single file in the format you pick (WAV or MP3).

Does it work on a phone or tablet?

Yes, in a modern mobile browser. Phones have less memory than desktops, so keep batches smaller — a few files at a time merges comfortably.

Where are my files stored?

Nowhere on the site. Audio stays in your browser's memory while you work, and the export is saved through your browser's normal download flow. Closing the tab clears everything.

Ready to start? The merging tool on the home page is one click away — add your files, set the order, and download the result.