Audio Converter
Convert audio files between MP3, WAV, FLAC, OGG, AAC, WMA, M4A, AIFF, and OPUS. Free, fast, and private. No account required.
Upload Audio Files
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Supports MP3, WAV, FLAC, OGG, M4A, AAC, WMA, AIFF, OPUS. Max 100MB per file.file.mp3
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Converting...
This may take a few seconds depending on file size and formatoutput.mp3
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Upload a file to see its format details
| Format | -- |
| Duration | -- |
| Size | -- |
| Bitrate | -- |
| Sample Rate | -- |
| Channels | -- |
Format Comparison
| Format | Type | Quality | Size |
|---|---|---|---|
| MP3 | Lossy | Good | Small |
| WAV | Lossless | Perfect | Large |
| FLAC | Lossless | Perfect | Medium |
| OGG | Lossy | Good | Small |
| AAC | Lossy | Great | Small |
| WMA | Lossy | Good | Small |
| M4A | Lossy | Great | Small |
| AIFF | Lossless | Perfect | Large |
| OPUS | Lossy | Excellent | Tiny |
Bitrate Guide
- 64 kbps - Low quality. Voice/speech only, very small files. Suitable for podcasts where bandwidth is limited.
- 128 kbps - Standard quality. Acceptable for casual listening. Good balance of quality and file size.
- 192 kbps - High quality. Noticeable improvement over 128k. Good for music libraries.
- 256 kbps - Very high quality. Near-transparent for most listeners and equipment.
- 320 kbps - Maximum MP3 quality. Virtually indistinguishable from lossless.
Which Format Should I Use?
- MP3 - Universal compatibility, sharing online, portable devices
- WAV - Professional audio editing, mastering, studio work
- FLAC - Lossless archiving with smaller files than WAV
- OGG - Open-source projects, game engines (Unity, Godot)
- AAC/M4A - Apple ecosystem, iTunes, better quality than MP3 at same bitrate
- AIFF - Mac-native lossless, Logic Pro, GarageBand
- OPUS - Best lossy codec for low bitrate, VoIP, Discord, streaming
How Audio Conversion Works
Convert between any audio format in three easy steps. Our server-side FFmpeg pipeline handles all the heavy lifting.
Upload Your Files
Drag and drop one or more audio files onto the upload area, or click Browse to select files from your device. Our converter automatically detects the input format and displays file information including duration, bitrate, sample rate, and channels. Batch processing is fully supported for converting multiple files simultaneously.
Choose Output Settings
Select your desired output format from the nine available options. Fine-tune quality with bitrate controls (64-320 kbps for lossy formats), sample rate selection (22.05 kHz to 48 kHz), and channel configuration (keep original, convert to mono, or convert to stereo). Lossless formats like WAV and FLAC ignore the bitrate setting since they preserve full quality.
Download Your Audio
Click Convert and your files are processed on our servers in seconds. Preview the converted audio with the built-in player to verify quality before downloading. For batch conversions, download all files as a single ZIP archive. All uploaded files are automatically deleted within one hour for your privacy.
Voice Recorder Use Cases
A browser-based voice recorder is useful for countless scenarios, from quick voice memos to professional reference recordings.
Device Compatibility
Convert audio files to formats compatible with your phone, car stereo, smart speaker, or media player. Not every device supports every format, so converting to universally compatible MP3 or AAC ensures your music plays everywhere without compatibility issues.
File Size Reduction
Convert large WAV or AIFF files to compressed formats like MP3, OGG, or OPUS to dramatically reduce file size. A 50MB WAV file becomes a 5MB MP3 at 192 kbps with minimal perceptible quality loss, saving storage space and bandwidth for uploading and sharing.
Professional Audio Production
Convert compressed audio to lossless WAV or AIFF for editing in DAWs like Ableton, FL Studio, and Logic Pro. Ensure you work with the highest quality source material for mixing and mastering. Convert final masters to multiple delivery formats for distribution.
App & Game Development
Game developers and app builders convert audio assets to optimized formats for their engines. OGG for Unity and Godot, OPUS for web applications and WebRTC, WAV for sound design tools. Batch convert entire asset libraries to the correct format for your platform.
Why Use Our Free Voice Recorder?
Fast Server-Side Processing
Unlike browser-based converters that are limited by your device
Batch Conversion
Upload multiple files at once and convert them all with the same settings. Whether you need to convert 5 podcast episodes from WAV to MP3, or transcode an entire folder of game audio assets to OGG, our batch processing handles it efficiently. Download all converted files as a single ZIP archive for convenience.
Quality & Format Control
Choose between three quality presets (Low, Medium, High) that control sample rate and channel count, and three output formats (WebM for smallest files, MP3 for compatibility, WAV for lossless quality). Select your preferred microphone from a list of available devices. The estimated file size updates in real-time so you know exactly how much storage your recording will use.
100% Browser-Based & Private
Unlike other online voice recorders that upload your audio to their servers, our recorder processes everything locally in your browser using the Web Audio API and MediaRecorder API. Your audio never leaves your device unless you explicitly choose to send it to another tool. No data is collected, no accounts required, and no servers involved in the recording process itself.
Frequently Asked Questions
Record, Enhance, and Transform Your Voice
Use the Voice Recorder with our full suite of AI audio tools. Clone your voice, transcribe speech, enhance quality, and more.