Voice notes, lecture parts, interview segments — joined into one recording with the long pauses shortened and every part at the same volume. Processed in your browser, never uploaded.
WhatsApp voice notes (.opus/.ogg), iPhone Voice Memos (.m4a), Android recorder files, MP3 or WAV — up to 20.
🎙️ Drop voice recordings here, or tap to choose
Clean-up is on: long pauses are shortened and volumes evened out
Crossfade blends each clip into the next; the clean-up options are made for voice recordings.
MP3 plays everywhere; M4A is smaller at the same quality; WAV is lossless for editing.
Tap the box and choose your recordings in the order they were made. Mixed formats are fine.
Check the order and trim any part by dragging the waveform edges. Use Mute a part to silence a cough, a name or a phone number.
Remove silence and Even out volume are already on: silent starts and ends are cut and pauses longer than a second are shortened to 0.4 s.
Choose MP3 (plays everywhere) or M4A, mono to halve the size, then press 🔀 Merge audio and download.
💡 Tip: Sending the result to be transcribed? Mono MP3 at 96 kbps is plenty for speech and uploads quickly.
Long explanations on WhatsApp arrive as a string of voice notes; lectures and interviews get recorded in parts. Listening, forwarding or transcribing them is far easier as one file. This merger decodes each recording in your browser, trims the dead air, brings every part to a similar loudness and saves one compact file.
It is also private by design: a voice note is often personal, and here it never leaves your device.
For music, turn the clean-up off or use the MP3 Merger. To combine text transcripts for ChatGPT or Claude, see Merge Files for AI.
Save the voice notes to your phone or computer (they are .opus or .ogg files), add them above in order and press Merge audio. The pauses are shortened and the result is one MP3 or M4A.
Yes. Share the memos to Files, then add the .m4a files here. They can be mixed with recordings from other apps.
It trims silent starts and ends of each recording and shortens pauses longer than one second to 0.4 seconds. Turn it off to keep the timing exactly as recorded.
Yes — open “Mute a part” under any clip and enter the start and end seconds. That section becomes silent in the merged file.
MP3 plays everywhere. M4A (AAC) is smaller at the same quality in browsers that can encode it. Mono is ideal for speech.
No. Decoding, editing and encoding all run in your browser on your own device — your audio is never sent anywhere.
Everything on AIMerger brings things together — here is what pairs with this one.