Convert WAV to MP3
Drop your WAV below. Get a compact MP3 that's easy to share.
Drop your files here
or click to browse — up to 50 MB per file
Images, PDFs, Word docs, PowerPoints, audio, and more
Privacy first — most conversions happen in your browser
WAV vs MP3: when to compress
WAV files store uncompressed audio, which means perfect quality but very large files — a 3-minute song is about 30 MB as WAV vs 3 MB as MP3. Converting to MP3 makes audio practical for email, messaging, streaming, and portable devices. At 192 kbps (OnlyFiles' output bitrate), MP3 audio is perceptually transparent — most listeners cannot distinguish it from the uncompressed original in blind tests.
Secure server processing
OnlyFiles uses FFmpeg on a secure server to encode your WAV as MP3 at 192 kbps. FFmpeg is the industry-standard audio processing tool. Your file is uploaded over HTTPS, converted, and deleted immediately — nothing is stored on the server. The output is a standard MP3 file compatible with every music player, phone, and streaming platform.
When to use this
- Shrink a large recording down to a shareable MP3
- Upload audio to a platform that requires MP3 format
- Convert voice memos or recordings for email or messaging
Frequently asked questions
How do I convert WAV to MP3 for free?
Drop your WAV file at onlyfiles.org/convert/wav-to-mp3. The conversion produces a high-quality MP3 at 192 kbps using FFmpeg. No signup needed.
How much smaller is MP3 compared to WAV?
MP3 files are typically 5-10x smaller than WAV. A 50 MB WAV recording becomes roughly 5 MB as MP3, making it practical for email, messaging, and web upload.
What bitrate is the MP3 output?
OnlyFiles converts at 192 kbps, which provides a good balance of quality and file size. This is considered high quality for most uses including music, podcasts, and voice recordings.