How to convert WAV to MP3 on Mac (free, no command line)
Updated 2026-06-17 · Runs locally — nothing uploaded
Compress a big .wav into a high-quality .mp3 on your Mac — 320 kbps, no command line, nothing uploaded. Also converts M4A and AAC. One step with FFmix.
- Output
- WAV → MP3 320k
- Processing
- On your Mac
- Setup
- About 2 minutes to set up
- Access
- Free local task
A .wav is pristine but enormous — uncompressed audio means minutes can run into hundreds of megabytes, which is awkward to upload, email, or keep in bulk. MP3 at 320 kbps keeps the quality your ear actually cares about at a fraction of the size.
FFmix converts WAV — and M4A, AAC, FLAC — to a clean 320k MP3 on your Mac, with nothing uploaded. Drag it in, confirm, and the MP3 lands next to the original; expand Advanced anytime to see the exact command.
Steps
- 1 Drag your .wav (or .m4a / .aac) file into FFmix.
- 2 Choose the Convert task and pick MP3 320k.
- 3 Confirm and click Start — the .mp3 saves next to the original.
Advanced: canonical ffmpeg recipe
This is the canonical recipe. FFmix adapts encoder flags to the engine on your Mac, then shows the final command; the command shown is the command run.
ffmpeg -i input.wav -c:a libmp3lame -b:a 320k output.mp3Drop a file and go — all local, nothing uploaded.
FAQ
What bitrate is the MP3?
320 kbps by default — effectively transparent for music and speech. Drop to 192 kbps if you'd rather have a smaller file.
Can it also convert M4A or AAC to MP3?
Yes. FFmix reads WAV, M4A, AAC, FLAC and more, and writes a clean MP3 — handy when something only accepts MP3.
Why convert WAV to MP3 at all?
WAV is uncompressed and huge — minutes of audio can run hundreds of megabytes. MP3 at 320k is a fraction of the size with no audible difference, so it's far easier to upload, email, or store.
Related guides
Pull the audio out of any video as a high-quality MP3 on your Mac — no command line, nothing uploaded. One click with FFmix.
How to normalize podcast audio to −16 LUFS on MacLevel a podcast episode to −16 LUFS with a −1.5 dB true-peak ceiling and export MP3 on Mac. The loudness pass runs locally with ffmpeg.