01
Add your audio
Drag in an audio file — MP3, M4A, WAV, OGG, FLAC, or AAC (a video file works too). The file is read locally; nothing is uploaded.
Audio → audio
Audio converter — free and in your browser.
A free online audio converter to change MP3 to WAV, M4A to MP3, or WAV to MP3 and download the result — no sign-up, nothing uploaded.
This audio converter changes a file from one format to another entirely in your browser: pick a file, choose an output format (MP3, M4A, or WAV), and download the converted audio in seconds. Got a file in the wrong format? Drop it in, choose the part you need, and convert it. Your audio never leaves your device — it's decoded and re-encoded right here in the page, with nothing uploaded to a server.
- No upload
- Runs 100% in your browser.
- MP3 · M4A · WAV
- Convert to the format you need.
- Trim as you go
- Convert just the range you want.
How it works
Three steps to convert an audio file.
02
Pick a range & format
Choose the start and end you want (up to 10 minutes) and an output format — MP3 for compatibility, M4A for smaller files, or WAV for full quality.
03
Convert & download
The audio is decoded and re-encoded in your browser. Play it right on the page to check it, then download the file to your device.
Output formats
Convert to MP3, M4A, or WAV.
MP3 — the most compatible format. Plays on every phone, computer, car stereo, and app.
M4A (AAC) — smaller files at the same quality, great for Apple devices and tight storage.
WAV — uncompressed and full quality, ideal when you'll edit the audio further.
Converting is a re-encode: the audio is decoded and encoded again into the new format at the preset bitrate, so it isn't a bit-for-bit copy. A lossy-to-lossy conversion (say M4A to MP3) can't recover quality the source already lost — and WAV is the only lossless target (uncompressed PCM, largest file, full quality).
Why use it
Private, fast, and free.
Nothing is uploaded — your audio is processed entirely on your device, so it stays private.
Convert just the part you need by setting a start and end before you convert.
No account, no watermark, no install — it runs in the browser you already have open.
Need the words, not just the file?
Turn the audio into notes and a transcript.
If you want the words, not just a different format, Video to Notes can transcribe an audio or video file and write a summary, key points, and a timeline you can download. For YouTube links and longer videos, the Chrome extension does it right in your browser.
- Full transcript plus an AI summary
- Key points and a clickable timeline
- Export to Markdown, PDF, or HTML
FAQ
Audio converter questions
How do I convert an audio file?
Drop an audio file onto the box at the top of this page or choose one. Pick the part you want and an output format (MP3, M4A, or WAV), then select Convert audio. The audio is re-encoded into the chosen format in your browser and offered as a download — you can preview it on the page first.
Is my audio uploaded to a server?
No. The file stays on your device. It is decoded and re-encoded entirely in your browser — nothing is uploaded, and the converted audio is returned straight to you as a download.
Does converting audio lose quality?
It can. Conversion is a re-encode: the audio is decoded and then encoded again into the new format at the preset bitrate, so it's not a bit-for-bit copy. Converting between lossy formats (for example M4A to MP3) can't recover quality the source already lost. WAV is the only lossless target — it's uncompressed PCM, so it keeps full quality at the cost of a larger file.
Which formats can I convert between?
You can convert to MP3 (most compatible), M4A/AAC (smaller files), or WAV (uncompressed, full quality), and the input can be MP3, M4A, WAV, OGG, FLAC, AAC, or even a video file. MP3 is selected by default. Each conversion handles a range of up to 10 minutes; for a longer file, convert it in parts.
Is there a length or file-size limit?
Each conversion covers a range of up to 10 minutes and files up to about 500 MB, which keeps the in-browser processing fast and reliable. For a longer recording, convert it a range at a time.
Is it free and do I need to sign up?
It's free and there's no sign-up. Because everything runs in your browser, there's no usage limit on converting audio.
Try it now
Convert your audio file.
No account, no upload — just a file and a few seconds.