mp3
The safest all-purpose choice for music, downloads, cars, phones, and older players.
Fast, private audio conversion
Audio Converter
Convert audio between MP3, WAV, AAC, FLAC, Opus, OGG and more. Choose a use-case preset or customize quality settings — all in your browser.
Files stay in your browserMediaBunny Web WorkersBatch conversion
Step 1
Add your audio
Drag files here, browse your device, or add several files for batch conversion.
Drop audio files here or click to browse
MP3, WAV, FLAC, AAC, OGG, Opus, M4A — up to 500MB
Step 2
Choose the output
Start with a use-case preset, then fine-tune format and quality if needed.
What are you using this for?
Output Format
Quality
mediumSmaller fileBetter quality
Audio is processed locally in your browser and is never uploaded.
Formats, workflow & privacy
Format Comparison
| Format | Type | Compression | Best For | Compatibility |
|---|---|---|---|---|
| MP3 | Lossy | ~10:1 – 12:1 | Universal music playback, all devices | ★★★★★ |
| AAC | Lossy | ~10:1 – 12:1 | Apple ecosystem, better than MP3 at low bitrates | ★★★★☆ |
| FLAC | Lossless | ~1:1 – 2:1 | Lossless archive, audiophile quality | ★★★☆☆ |
| WAV | Lossless | ~1:1 – 2:1 | Raw uncompressed, music production | ★★★★☆ |
| Opus | Lossy | ~10:1 – 12:1 | Voice, streaming, best efficiency | ★★★☆☆ |
| OGG | Lossy | ~10:1 – 12:1 | Open-source format for games & Linux | ★★★☆☆ |
| M4A | Lossy | ~10:1 – 12:1 | AAC in MP4 container, Apple default | ★★★☆☆ |
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Formats, workflow & privacy
Convert MP3, WAV, FLAC, AAC, OGG, Opus and M4A online
Choose a target format based on compatibility, size, and whether you need lossless sound. The converter supports batch processing and keeps the source files on your device.
aac
Efficient lossy audio for Apple devices, mobile playback, and smaller files at similar quality.
flac
Lossless compression for music libraries, archiving, and editing workflows where every detail matters.
wav
Uncompressed PCM audio for production, mixing, sampling, and applications that need raw audio.
opus
Very efficient modern audio for voice, streaming, web apps, and low-bandwidth delivery.
ogg
An open container commonly used for games, Linux applications, and web audio.
m4a
AAC in an MP4 container, widely supported by Apple software and modern media players.
How to convert an audio file
No account or upload is required. Pick a file, select the format that fits the job, and download the local result.
- 01
Select your files
Drop MP3, WAV, FLAC, AAC, OGG, Opus, M4A, and other supported audio files into the converter. Multiple files can be added at once.
- 02
Choose format and quality
Use a preset for music, podcasts, voice notes, or archiving. Adjust bitrate, channels, and sample rate when you need more control.
- 03
Convert and download
Start the conversion, preview completed files in the browser, then download one result or the whole batch as a ZIP archive.
Common audio conversion scenarios
The best format depends on where the audio will be played or edited. These starting points cover common everyday workflows.
Music library and sharing
Convert lossless masters to MP3 or AAC for portable listening while keeping the original FLAC or WAV archive untouched.
Podcasts and spoken audio
Use a mono MP3 at a moderate bitrate for clear speech with a smaller download and easier publishing.
Phone recordings and voice notes
Turn device-specific recordings into MP3 or M4A so they are easier to send, store, and play across devices.
Audio for video and editing
Choose WAV for production and further processing, or FLAC when you want a lossless but smaller archive.
Private by design
Files are read by your browser and processed in local MediaBunny Web Workers. They are not sent to a MediaKit server. When you remove a file or close the tab, the local object URLs and worker resources can be released by the browser.
FAQ
Audio converter FAQ
Are my audio files uploaded?
No. Audio conversion runs in your browser. The selected file is passed to a local Web Worker and is not uploaded to MediaKit.
Which audio formats can I convert?
You can add MP3, WAV, FLAC, AAC, M4A, OGG, Opus, WMA, AIFF, AC3, E-AC-3, and PCM files. Available output formats depend on the browser codecs and include MP3, AAC, FLAC, WAV, Opus, OGG, and M4A.
What bitrate should I choose?
For music, 192 kbps is a practical balance and 320 kbps preserves more detail. Spoken audio usually works well at 64–128 kbps, especially in mono. Higher bitrate means a larger file.
Can I convert to a lossless format?
Yes. FLAC preserves the decoded audio without the size of uncompressed WAV. WAV is useful when an editor or production tool specifically expects PCM audio.
Does it work on phones?
Yes, on a current browser. Keep the tab open while encoding, and use smaller batches when device memory is limited.
How large can an audio file be?
Each input can be up to 500 MB. Actual processing time and the number of files you can process at once also depend on available device memory.
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