Voice memos and Apple audio as MP3s that play on everything — converted privately on your own device.
MP3, WAV, M4A, FLAC, OGG… — or drop a video (MP4, MOV, WebM) to extract its audio · nothing is uploaded
No size limit · files are processed on your device and never uploaded · how it works
MP3 conversions run instantly in your browser — nothing to download. Other formats use the FFmpeg engine (31 MB, once).
Plays everywhere — the safe choice.
192 kbps is transparent for most music; 128 suits voice; 320 is the maximum.
Runs in your browser. Files are never uploaded — you can go offline after the page loads.
Drop files, pick options, download. Whole folders at once, no signup, no daily limit.
The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.
Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.
This page opens the Audio Converter pre-set to MP3 — the reliable target for M4A voice memos, recordings and music.
FFmpeg runs in your browser, so private recordings stay private: nothing is uploaded, and it works offline once loaded.
This is a pre-set view of the Audio Converter. Every option in the toolbar can still be changed.
M4A is Apple’s AAC container — modern apps handle it, but plenty of car stereos, older players, and upload forms only accept MP3. Converting removes the argument.
Yes — voice memos are M4A. Share the memo to your files, drop it here, and download an MP3. For voice, 128 kbps keeps files small and clear.
Old DRM-protected purchases (M4P) do not — that is a legal restriction, not a technical one. Standard M4A files convert fine.
Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.
InfyTool is built by the same team as these free libraries.