WAV to MP3
Upload a WAV file and convert it to MP3 at your chosen bitrate — 128, 192, 256, or 320 kbps. Higher bitrates preserve more audio detail at the cost of larger file sizes. 192 kbps is a good default for most content; 320 kbps is effectively transparent quality for music.
This is useful for shrinking large WAV files for sharing, preparing audio for platforms that require MP3, or reducing storage for recordings that don't need uncompressed quality. The conversion is lossy — audio data is permanently discarded to achieve compression.
Everything runs in your browser using ffmpeg.wasm — your audio is never uploaded to a server.
By The Paper Room Editorial Team — Audio Tools
Frequently asked questions
What bitrate should I choose?▼
128 kbps is acceptable for speech and podcasts. 192 kbps is a good default for general use. 256 kbps is high quality for music. 320 kbps is the maximum MP3 bitrate and is effectively transparent — most people can't distinguish it from the original in blind tests.
Can I convert back to WAV later?▼
Yes, but the round-trip won't restore the original quality. MP3 encoding permanently discards audio data. Converting the MP3 back to WAV will give you an uncompressed file, but it will sound identical to the MP3, not the original WAV.
Does this upload my audio to a server?▼
No. The conversion runs entirely in your browser using ffmpeg.wasm. Your audio stays on your device.