With this online audio converter, you can convert WAV to MP3, FLAC to MP3, or extract audio from a video.
or drop, paste, or choose from cloud
Feed it WAV, FLAC, AAC, M4A, OGG, WMA or AIFF, or an MP4, MOV or MKV video, and the soundtrack comes back as an MP3.
Pick the bitrate and sample frequency, switch on variable bitrate, choose mono or stereo, level the volume or strip the cover art.
The whole conversion runs from this page over an encrypted connection. Nothing to download, nothing to sign up for, nothing shared with anyone.
Upload your audio file.
Upload a video (e.g. an MP4 or MOV file) to extract its audio.
Use the optional settings to change the audio bitrate, channels, and more.
Click on "Start" to begin the conversion.
The MP3 file format has several advantages for audio files. It is the most common and widely supported format for music and other audio. Many software and hardware music players can play MP3 files.
MP3 files use "lossy" compression. This makes the file size much smaller than other audio formats while slightly reducing audio quality. Most people can hardly hear the difference and are satisfied with MP3 audio quality.
File extension: .mp3, MIME type: audio/mpeg, Standardised as MPEG-1/2 Audio Layer III in 1993.
MP3 on WikipediaOn the audio side the converter accepts the formats people actually have lying around. WAV and AIFF come from recordings and CDs, FLAC and ALAC from lossless libraries. AAC and M4A come from Apple devices, OGG and OPUS from games and messengers. WMA comes from older Windows machines, and AMR or 3GA from phone voice memos.
Video files work the same way. Drop in an MP4, MOV, AVI, MKV, WEBM, or FLV and only the audio track is taken out and encoded as MP3. The picture is discarded, which is why a 2-hour recording collapses to a fraction of its size. That is the quickest way to keep a lecture, an interview or a podcast recording as something a phone or car stereo can play.
Bitrate decides how much data each second of audio may use, and it is the setting that matters most. 320 kbps is the practical ceiling for MP3. Pick it for music you care about. 192 kbps is the everyday compromise most listeners cannot fault. 96 to 128 kbps is plenty for speech, audiobooks, and voice memos, and it keeps files small enough to email.
Variable bitrate (VBR) spends those bits where they are needed. Busy passages stay clean while silence costs almost nothing. The result is usually a smaller file at the same perceived quality. Sample frequency should normally stay at 44.1 kHz, the CD standard; dropping to 22.05 kHz halves the data but audibly dulls music. Mono instead of stereo roughly halves the size again and is the right choice for a single-microphone recording.
Two extras are worth knowing about. Normalisation evens out a recording that swings between too quiet and too loud. Removing the embedded cover art strips an image that can account for a surprising share of a small file.
Yes. Everyday conversions are free and need no account: upload a file, start the conversion and download the MP3. A subscription only comes into play for very large files, longer batches and priority processing.
Yes. Upload an MP4, MOV, AVI, MKV or WEBM file and the converter extracts the audio track and encodes it as MP3, discarding the picture. It is the usual way to turn a recorded lecture, interview or screen capture into something you can listen to.
WAV, FLAC, AAC, M4A, OGG, OPUS, WMA, AIFF, AMR and more on the audio side, plus the common video containers. If a format is unusual, upload it anyway, the MP3 converter reads far more than the list above.
Use 320 kbps for music you want to keep, 192 kbps as a balanced default, and 128 kbps or less for speech. Turning on variable bitrate usually gives you a smaller file at the same perceived quality.
MP3 is a lossy format, so some data is always discarded. Coming from a lossless source such as WAV or FLAC at 256 kbps or higher, the result is indistinguishable for most listeners. Re-encoding a file that was already an MP3 costs a little more, so convert from the original whenever you have it.
Yes. Add as many files as you need and they are processed in one go. Each comes back as its own MP3, with the settings you chose applied to all of them.
No. Everything happens on this page, so the same MP3 converter works on Windows, macOS, Linux, Android and iOS without any download.
Yes. Open the page in your mobile browser and pick a file from the device or from cloud storage. The optional settings and the download work the same as on a desktop.
Everything here runs in the browser, with no install and no sign-up.
