Audio to MP3
Free online conversion of AC3, FLAC, M4A, OGG, OPUS, PCM, WAV to MP3
Convert any audio to MP3 online
MP3 is the universal audio format — it plays on every phone, car stereo, browser and music app without extra software. This free tool converts WAV, M4A, FLAC, OGG, OPUS, AAC and more to MP3 right in your browser, so your music and recordings work everywhere.
Small files, perfect for sharing
MP3 uses lossy compression to shrink audio to a fraction of the original size while keeping it sounding good, which makes it ideal for sharing tracks, uploading podcasts or filling a phone with music. You can pick the bitrate to balance quality against file size.
Runs in your browser, files stay private
Conversion happens entirely on your device with WebAssembly — nothing is uploaded to a server. No sign-up, no watermark and no file limit, so you can convert as many tracks to MP3 as you need.
Frequently asked questions
How do I convert audio to MP3?
Open the tool, drop in your WAV, M4A, FLAC, OGG or OPUS file, keep MP3 as the output, choose a bitrate and click convert. The MP3 is produced in your browser and downloads immediately.
Why convert to MP3?
MP3 is the most universally supported audio format — it plays on virtually every device and app, and its small size makes it the safest choice for sharing, streaming or storing music.
Is the audio to MP3 converter free?
Yes, completely free with no sign-up, no watermark and no limit on the number or size of files you convert.
What bitrate should I use?
320 kbps is near-transparent for music, 192 kbps is a good balance of quality and size, and 128 kbps keeps files small for speech and podcasts. Higher bitrate means better quality and a larger file.
Are my audio files uploaded to a server?
No. All processing runs locally in your browser, so your audio never leaves your device.