FileConv
Audio Converter

Convert Audio Files to MP3

Convert AAC, WAV, FLAC, M4A and more to MP3.
Everything runs in your browser — no files are sent to any server.

Output Format

MP3Accepted: MP3 · AAC · WAV · FLAC · M4A
Conversion runs entirely in your browser. Chrome or Edge recommended. Some formats (e.g. FLAC) may not work in Safari.

Drop files here

or browse to selectMP3 · AAC · WAV · FLAC · M4A

Files are processed in your browser and never sent to a server

About the MP3 Converter

MP3 is the most widely supported audio format, compatible with virtually every device, app, and platform. Convert M4A or AAC files recorded on iPhone, lossless WAV or FLAC files, and other audio formats to MP3 for universal playback. All conversion runs entirely in your browser using the Web Audio API — files are never sent to a server. Multiple files can be converted in one session.

Why This Tool Is Safe

What "no upload required" really means — here's how it works.

Upload-based converter services

File upload ↑↓

Converted on server → returned
Your photo data may remain on someone else's server

FileConv

Processed in browser ✓

Never reaches a server
Zero network transfer

Private by Design

Files are processed in your device's memory only. Nothing is sent externally.

Fast

No network transfer means conversion speed is not limited by your connection.

Works Offline

Once the page loads, you can convert files without an internet connection.

Frequently Asked Questions