April 28, 2026
How to Merge Audio Files Online (No Software Needed)
Combine MP3, WAV, OGG, M4A and more into a single file in your browser. Reorder tracks, add a crossfade, and download the result. No install, no sign-up.
You have a handful of audio files and you need to glue them together into one. A playlist for a friend, an intro stitched from three voice memos, a sample reel for an audition. The fastest way to merge audio files online is to drop them onto a single page, drag them into the order you want, and download the merged file. No Audacity, no command line, no upload to a stranger's server.
This guide walks through that exact flow on MyTools, with screenshots from each step.
What You'll Need
- Two or more audio files in MP3, WAV, OGG, M4A, FLAC, or AAC format
- Any modern browser (Chrome, Firefox, Safari, Edge)
- That's it — no account, no install
How to Merge Audio Files — Step by Step
Step 1: Open the merger and drop your files
Go to MyTools — Merge Audio in your browser. You will see a single drop zone with the supported formats listed beneath.
Drop two or more audio files at once. The picker accepts everything common — MP3 to FLAC — and you can mix formats freely if you need to.
Step 2: Reorder, then pick your settings
The page switches to a workspace view. Each file appears as a numbered row showing its filename, duration, and size. A sidebar on the right exposes the merge settings.
Use the up and down arrow buttons to reorder tracks, or drag them by the handle on the left. The numbered prefix updates instantly so you always know exactly what the final order will be. Click the trash icon to remove a track, or hit Add more to append additional files.
In the sidebar, pick:
- Output format — defaults to the format your files share. Switch to MP3, WAV, OGG, M4A, FLAC, or AAC if you want a different one.
- Crossfade — Off, 1s, 2s, or 3s. The crossfade applies between every pair of tracks, so each one blends into the next instead of cutting abruptly.
- Fade in first track / Fade out last track — short fades at the very beginning and end of the merged file. Useful for removing the click or pop you would otherwise hear at the bookends.
The "Output length" line updates as you change the crossfade, so you know the final duration before you commit.
Step 3: Merge and download
Click Merge audio. The page decodes the files one by one (you will see a "Decoding 1 of 3…" indicator), then encodes the output. For a few minutes of audio this takes well under a minute on a normal laptop.
Click Download to save the merged file. If you want to adjust the order or change a setting, click Tweak the order or settings to go back to the workspace with all your files still loaded — no re-upload needed.
Tips & Troubleshooting
The output sounds choppy at the cuts. Turn on a 1- or 2-second crossfade. Plain concatenation works perfectly when tracks already share a clean fade, but for raw recordings the crossfade is what makes the seams disappear.
My files have different formats. Drop them in anyway. The page detects the mismatch and shows a banner saying which output format will be used. You can override it with the dropdown if MP3 is not what you want.
One file failed to decode. It is shown with a red border and skipped automatically — you can keep merging the rest, or remove it and try a re-export from the original recorder.
I only need a piece of one of these files before merging. Use Trim Audio first to cut each file down to the part you want, then drop the trimmed clips into the merger.
I want to send this as a video instead of audio. Once you have the merged MP3, the MP3 to MP4 converter wraps it in a video with a cover image — useful for sharing on platforms that don't accept audio uploads.
Done
That is the entire flow. Drop the files, reorder, pick a crossfade, hit merge, download. The whole process happens in your browser — none of your audio is uploaded, stored, or logged.
Ready to combine your tracks? Try Merge Audio for free →