M4A to MP3
Convert an M4A (AAC) file to MP3.
Upload an M4A recording and download MP3. Typical iPhone voice memos and AAC exports work; DRM-protected files do not. Output is re-encoded with libmp3lame V2 (lossy). One file up to 10 MB.
Security and privacy
Encryption at rest
Files are encrypted during storage with AES-256-GCM using a unique key per file
Auto-deletion
Uploaded and processed files are removed after the session ends
Temporary sessions
Processing sessions expire automatically and are not kept as a permanent archive
Protected download links
Downloads require a short-lived access token — not a public permanent URL
Recommended tools
FAQ
Yes. Typical iPhone voice memos and M4A exports are supported.
Yes. Files are transferred over a secure connection, encrypted while stored on the server, and automatically deleted. Flimpa does not store documents permanently and does not use them to train models.