01CONVERT & EXTRACT
Convert & extract
Move between the formats you use every day.
Explore category → Free audio studio, made private
Make your audio
sound right.
Convert, compress and edit your audio in a few clicks. Your files stay on your device, always.
✓ No sign-up✓ No file uploads✓ Always free
⚡
PLATFORM OVERVIEW / DIRECT ANSWER:
Audio369 is a free, all-in-one browser audio suite featuring 59 client-side tools for format conversion, waveform editing, compression, voice recording, acoustic analysis, and AI speech filters. Operating completely in browser RAM with HTML5 Web Audio and WebAssembly, Audio369 requires zero server uploads, keeping user files 100% private.
QUICK CONVERTER
Convert any audio in seconds
Drop your file, pick a format, and download. Nothing ever leaves your device.
Choose an audio file or drag it hereMP3, WAV, M4A, AAC, OGG, FLAC & VideoCONVERTS LOCALLY · ZERO CLOUD UPLOADS
SELECT FORMAT
🔒 100% Client-Side Processing
POPULAR STUDIO APPS
View all 59 studio apps →Most-used studio apps
→
Audio Converter
Convert MP3, WAV, M4A, OGG and more.
→Audio Compressor
Make files smaller without the fuss.
→Audio Cutter
Trim the exact part you want to keep.
→Audio Merger
Join multiple tracks into one file.
→Volume Booster
Give quiet audio a clean volume lift.
→Ringtone Maker
Create a ringtone from your own audio.
STUDIO CATALOG
59 STUDIO APPS AVAILABLEEverything you need for audio
Every app runs right here in your browser. Fast, free, and private.
02EDIT & SHAPE
Edit & shape
Make every second of your audio feel intentional.
Explore category →03COMPRESS & OPTIMIZE
Compress & optimize
Keep quality high and file sizes low.
- •Audio Compressor
- •Reduce MP3 Size
- •Karaoke & Vocal Remover
- •Audio De-Esser
- •Stereo Widener
- •Bitrate Converter
04CREATE & PUBLISH
Create & publish
Useful finishing touches for creators and podcasters.
- •Text to Speech (TTS)
- •Binaural Beats Generator
- •Voice Recorder
- •Ringtone Maker
- •Podcast Intro / Outro Merger
- •Waveform Video Maker
05ANALYZE & ORGANIZE
Analyze & organize
See the useful details hidden inside an audio file.
- •Musical Key Finder
- •Frequency Spectrum Visualizer
- •BPM Detector
- •Audio Duration Checker
- •File Size Calculator
- •Audio Quality Analyzer
06AI AUDIO LAB
AI audio lab
In-browser voice filters, speech transcription, and enhancement.
Explore category →The Next Generation of Private, In-Browser Audio Engineering
For decades, audio manipulation required specialized desktop digital audio workstations or cloud conversion websites that sent your private files over external servers. Audio369 replaces this outdated workflow with a modern, client-side digital signal processing workstation built entirely with web standards.
1. Local Web Audio DSP Engine
When you load a track into Audio369, your browser decodes the binary file into raw 32-bit floating point PCM audio buffers. All filters, volume gains, harmonic boosts, and time slices execute mathematically on your device CPU with zero latency.
2. Zero-Upload Privacy Guarantee
Unlike legacy websites that upload personal voice memos, client tracks, and sensitive recordings to remote cloud storage, Audio369 never transmits audio data over the internet. Your recordings remain in your computer memory and are purged once the tab is closed.
3. Full Format & Codec Support
Convert directly across lossless master formats (WAV, FLAC) and compact streaming codecs (MP3, AAC, M4A, OGG). Extract high-fidelity soundtracks from video files without quality loss.
Audio Format & Bitrate Reference Matrix
| Format | Compression Type | Typical Bitrate | Best For |
|---|---|---|---|
| WAV | Uncompressed Lossless | 1411 kbps (16-bit 44.1kHz) | Mastering, DAW export, professional video editing |
| FLAC | Compressed Lossless | 700 - 900 kbps | Lossless audio archival, audiophile listening |
| MP3 | Lossy (Psychoacoustic) | 128 - 320 kbps | Podcasts, web streaming, universal device playback |
| AAC / M4A | Lossy (Advanced Codec) | 128 - 256 kbps | Apple ecosystem, YouTube video soundtracks |
| OGG Vorbis | Lossy (Open Source) | 160 - 320 kbps | Game development, Spotify web playback |
HOW IT WORKSThree simple steps.
Three simple steps.
Zero hassle.
.wav
Drop your file
Drag any audio or video file straight into your browser window.
Make your edits
Convert, trim, boost or adjust. Live previews let you check your work instantly.
✓
Download instantly
Save your finished audio directly to your device with zero quality loss.
FAQ & ANSWERS
Frequently asked questions
Got questions about browser audio processing, file formats, or privacy? Here are answers to our most common inquiries.
Are my audio files ever uploaded to remote servers? +
No. Audio369 uses the native HTML5 Web Audio API and WebAssembly to process 100% of your audio locally inside your device's web browser memory. Your files are never uploaded, stored, or transmitted across the internet.
Is Audio369 completely free to use without daily limits? +
Yes, Audio369 is 100% free with no hidden fees, subscriptions, paywalls, or daily export limits. You can process as many audio files as you need.
Which audio formats and file extensions are supported? +
Our engine supports all major audio and video containers including MP3, WAV, AAC, M4A, FLAC, OGG, WebM, and audio tracks extracted from MP4, MOV, and MKV video files.
Does client-side audio processing reduce sound quality? +
No. Audio369 processes audio using high-precision 32-bit floating point calculations. Uncompressed formats like WAV remain bit-perfect, while lossy formats like MP3 and AAC use high-bitrate encoders (up to 320kbps) with limiter protection.
Can I use Audio369 on an iPhone, iPad, or Android device? +
Yes. Audio369 is built with a responsive interface optimized for mobile touchscreens on iOS Safari and Android Chrome, Firefox, and Brave browsers.
How does browser audio processing work without internet lag? +
Traditional web converters upload your large audio files across the internet to a server queue. Audio369 uses WebAssembly and Web Audio DSP compiled directly into your local browser, eliminating all network latency.
Is Audio369 safe for private client recordings and copyrighted stems? +
Yes. Because audio decoding, filtering, and encoding happen strictly in your computer's RAM, no third party or cloud database can ever access your recordings.
What is the maximum file size I can process on Audio369? +
There are no artificial file size caps or paywalled file limits. You can process audio files as large as your device's available RAM can handle.