Convert Audio & Video to MP3 Online — Free MP3 Converter
Convert audio and video files to MP3 online for free. Upload a file or paste a link, choose your quality, and download a ready-to-play MP3 in seconds — no account and no software to install.
What is the MP3 format?
MP3 (MPEG-1 Audio Layer III) is a lossy audio format that shrinks sound files to a fraction of their original size while keeping good listening quality. Because it is supported by virtually every phone, browser, car stereo and media player, MP3 remains the most universal way to store and share music and spoken audio.
Why convert to MP3?
- Small files that are easy to store and upload.
- Plays everywhere — no codec or special app required.
- Extract audio from a video to keep just the sound.
- Adjustable quality so you can balance size against fidelity.
Supported input formats
You can convert to MP3 from audio formats such as WAV, FLAC, M4A, AAC, OGG, OPUS, WMA and AIFF, and extract the soundtrack from video formats including MP4, MKV, MOV, AVI and WEBM, among many others.
Frequently asked questions
Is the MP3 converter free?
Yes. The converter is completely free to use, with no account, watermark or software installation required.
Will I lose audio quality?
MP3 is a lossy format, so some data is discarded during compression. At higher bitrates (192–320 kbps) the difference is hard to hear for most listeners. For a perfect copy, convert to a lossless format such as FLAC or WAV instead.
Can I convert a video to MP3?
Yes. Upload a video file or paste a link and the tool extracts the audio track and saves it as an MP3.
Do you store my files?
No. Your files are processed for the conversion and removed automatically afterwards.