MP3 Converter: Convert Any File to MP3, Free
This MP3 converter turns any audio or video file on your device into an MP3, with no upload and no sign-up
Your files never leave this device
- Free
- 128, 192, or 320 kbps
- Audio and video files
Convert to MP3
- 1
Drop a song, a voice memo, or a video
- 2
Choose Small file, Standard, or High
- 3
Press Convert, listen, and download the MP3
What you can do
Audio and video files
Open MP4, MOV, MKV, WEBM, M4A, WAV, FLAC, OGG, OPUS, AAC, and MP3 files, and save them as MP3, WAV, M4A, FLAC, or OGG
Sound from a video
Save the sound of a film, a talk, or a music video as its own file, and keep it unchanged when you pick the format marked Original
Many files at once
Drop a whole folder, convert every file with one press, and save them all with Download all
Settings you control
Pick the bitrate, keep one part with Trim, make it mono, change the sample rate, fade the ends, or even out the loudness
Nothing is uploaded
Your files convert on your device, so a private recording never leaves it
Works in your browser
Use it on Windows, Mac, iPhone, iPad, or Android, with nothing to install and no account
Which bitrate to choose
The MP3 format stores sound at a set bitrate. A higher bitrate keeps more detail and makes a bigger file.
| Choice | Bitrate, file size, and use |
|---|---|
| Small file | 128 kbps, about 1 MB per minute. Enough for speech, podcasts, lectures, and voice memos. |
| Standard | 192 kbps, about 1.4 MB per minute. The default, and a good fit for most music. |
| High | 320 kbps, about 2.4 MB per minute. The highest MP3 bitrate. As a music converter to MP3, use it for albums you keep. |
| Mono | Under Options, Channels set to Mono puts both sides into one. Use it for a single voice recorded on one microphone. |
| Where MP3 plays | Phones and cars, browsers, smart speakers, game consoles, and nearly every music player sold since the late 1990s. |
| When not to use MP3 | For a file you will edit many times. Each lossy save removes more detail, so keep a WAV or FLAC copy as the master. |
What files you can convert
Any file with sound
Drop any file into the MP3 converter. File types it reads include MP4, MOV, MKV, WEBM, M4A, WAV, FLAC, OGG, OPUS, and AAC. WMA and AMR do not open in browsers, so they fail with a clear message.
A smaller MP3
Put a large MP3 back through the MP3 converter to MP3 free of charge, at Small file, to fit an email. It loses a little more detail each time, so keep the first copy.
On iPhone and Android
Phones get the same MP3 converter. iPhone users tap Drop files or choose files in Safari and pick from Files or Photos. On Android, Chrome opens the same picker, and the MP3 goes to Downloads.
Why there is no link box
You convert files you already have. There are no link downloads from YouTube or any other site, and DRM-protected songs do not open.
Questions
- How do I convert a file to MP3?
- Drop the file, keep MP3 under To, and press Convert. Play the result, then press Download.
- What is the best free MP3 converter?
- Pick one by what it does with your file. You can use the MP3 converter free of charge, with no daily limit and no ads. The file stays on your device.
- Is an online MP3 converter safe?
- Many upload your file and show ads with fake download buttons. This free MP3 converter runs in the browser, so no copy of the file goes to a server.
- Can I convert a YouTube link to MP3?
- No. This file to MP3 converter works only with files on your device. It does not download from YouTube or any other link.
- How do I convert a file to MP3 on iPhone?
- In Safari, tap the drop area. Choose the file from Files or Photos, press Convert, then tap Download. The MP3 is saved in Files.
- What bitrate should an MP3 be?
- 192 kbps for most music, 320 kbps for music you keep, and 128 kbps for speech. A higher bitrate than the source adds no detail.
- Does converting to MP3 lose quality?
- Yes, a little, because MP3 is lossy. At 192 kbps and above the loss is hard to hear in most music. From a WAV or FLAC source the result is as good as MP3 gets.
Privacy
The browser reads your file, makes the MP3 in memory, and saves it to your device. No network request carries the file, so a private recording stays private.
Call from your browser
Suparelay lets you call any phone, mobile or landline, from this browser tab.