Step 01
Upload your audio files
Add one or more audio files from your device. The converter supports popular formats such as MP3, WAV, OGG, AAC, AIFF, M4A, WMA, and FLAC.
Convert AIFF to FLAC
Upload your AIFF files and export them as FLAC using browser-based FFmpeg WASM conversion.
FAST · STABLE · PRIVACY
Upload audio files to convert
Only AIFF input is accepted on this page. Output format is fixed to FLAC.
Files in queue: 0/50
Core conversion runs fully in your browser. No backend audio processing is used.
How to convert audio online in 3 simple steps
FreeTTS Audio Converter lets you upload multiple files, choose one output format, and convert audio directly in your browser with a simple batch workflow.
Step 02
Choose the output format
Select the format you want to convert to, including MP3, WAV, OGG, AAC, AIFF, M4A, or FLAC. All files in the queue will use the same output format.
Step 03
Convert and download
Start batch conversion in your browser, then download each converted file one by one or save all completed files together.
Why use FreeTTS Audio Converter
Built for fast audio conversion, easy batch processing, and private browser-based use, FreeTTS helps you change audio formats without a complicated workflow.
Convert audio directly in your browser
Your conversion runs locally in the browser, so you can process files quickly without relying on backend audio processing.
Batch convert multiple audio files
Upload several files into one queue, choose a target format once, and convert them together in a single workflow.
Support for popular audio formats
FreeTTS Audio Converter works with common formats like MP3, WAV, OGG, AAC, AIFF, M4A, WMA, and FLAC for flexible everyday conversion.
Easy download and queue control
Download finished files individually, save completed results in bulk, remove single items, or clear the whole queue before starting again.
Audio Converter FAQ
Find answers about supported formats, browser-based conversion, batch processing, downloads, and queue behavior in FreeTTS Audio Converter.
No. The current conversion workflow runs fully in your browser, and no backend audio processing is used.