Free Online Audio Tools
Convert, trim, normalize, merge, and process audio files directly in your browser. Powered by FFmpeg WASM - no upload, no server, 100% private.
MP3 to WAV
Convert MP3 audio to uncompressed WAV format free online. PCM 16-bit output using FFmpeg WASM. Lossless audio conversion.
WAV to MP3
Convert WAV audio to compressed MP3 format free online. LAME encoding using FFmpeg WASM. Reduce audio file size.
FLAC to MP3
Convert lossless FLAC audio to MP3 format free online. High-quality encoding, browser-based with FFmpeg WASM.
OGG to MP3
Convert OGG Vorbis audio to MP3 format free online. Universal compatibility, client-side conversion with FFmpeg WASM.
AAC to MP3
Convert AAC audio files to MP3 format free online. Browser-based FFmpeg conversion, no software needed.
M4A to MP3
Convert M4A (Apple) audio to MP3 format free online. LAME encoding using FFmpeg WASM, works on any device.
Audio Trimmer
Trim and cut audio files to specific start/end times free online. Cut clips using FFmpeg WASM, no upload needed.
Audio Normalize
Normalize audio loudness to streaming, podcast, or broadcast standards free online. EBU R128 loudnorm using FFmpeg WASM.
Audio Speed
Change audio playback speed from 0.5x to 2x free online. Speed up or slow down audio with pitch preservation.
Audio Volume
Adjust audio volume from 10% to 300% free online. Amplify or reduce audio levels using FFmpeg WASM.
Audio Fade
Add fade-in and fade-out effects to audio files free online. Smooth audio transitions using FFmpeg WASM.
Audio Merge
Merge multiple audio files into one MP3 free online. Join audio clips using FFmpeg concat in your browser.
Audio Reverse
Reverse audio playback free online. Play audio backwards using FFmpeg WASM. Best for short clips.
Why Use Browser-Based Audio Tools?
Most online audio converters require uploading files to their servers. This is slow for large files, raises privacy concerns for sensitive audio, and often limits you to a few conversions per day.
tconv.com uses FFmpeg compiled to WebAssembly (WASM) to process audio files entirely in your browser. Your files never leave your device:
- Complete Privacy - No file uploads, perfect for confidential recordings
- No Waiting - Processing starts instantly without upload queues
- No Limits - No daily conversion caps or registration walls
- Professional Quality - Same FFmpeg engine used by professionals worldwide
Frequently Asked Questions
Are these audio tools really free?
Yes, all audio tools on tconv.com are 100% free with no hidden costs, no registration, and no file limits. We use FFmpeg WebAssembly to process everything in your browser.
Do my audio files get uploaded to a server?
No. All processing happens locally in your browser using FFmpeg WASM. Your files never leave your device, ensuring complete privacy.
What audio formats are supported?
We support MP3, WAV, FLAC, OGG, AAC, M4A, and more. Convert between formats, trim, normalize, adjust speed and volume, add fade effects, and merge audio files.
Will I lose audio quality during conversion?
We use high-quality encoding settings by default. WAV output is lossless. For lossy formats like MP3, the default quality settings preserve excellent audio fidelity suitable for most uses.