Convert Audio Files Online
Convert MP3, WAV, M4A, AAC, OGG, FLAC and supported WebM audio in your browser. Choose an output for playback, editing, sharing or lossless storage.
Drop an audio file here
MP3, WAV, M4A, AAC, OGG, FLAC and WebM
Your audio stays in this browser. It is not uploaded to a FlowPick server.
Try a reproducible example
Convert a known WAV tone
These samples were generated for FlowPick: a four-second test pattern with a 440 Hz tone, plus a separate two-second WAV tone. They contain no third-party footage or speech.
Input, steps and checks
- Input
- A two-second, 440 Hz tone: WAV, 16-bit PCM, mono, 44.1 kHz, 176,444 bytes.
- What to do
- Download the WAV and choose it above. Select MP3 and convert, then listen to the saved output and inspect its audio information.
- What to check
- The output should contain the same steady tone and last about two seconds. MP3 padding may slightly change the reported duration; size depends on encoder settings.
This is a codec and export check, not a speech-quality test. Lossy conversion cannot restore detail, and this small file does not test long-recording memory use.
Preview the source
About audio conversion
What audio conversion actually changes
An audio file combines encoded sound with a container or file format. Conversion decodes the source and creates a new output for a player, editor, upload form or archive. WAV to MP3 makes a smaller delivery copy; FLAC to MP3 improves compatibility; MP3 to WAV creates an uncompressed working file but does not restore detail already lost to compression. FlowPick performs this processing locally in your browser.
Common conversions: WAV to MP3 · FLAC to MP3 · OGG to MP3 · MP3 to WAV · M4A to MP3
WAV · FLAC · M4A (AAC) · OGG (Opus)
MP3 · WAV · M4A (AAC) · FLAC · OGG (Opus)
Your audio stays in this browser. It is not uploaded to a FlowPick server.
How to convert audio online
Convert an audio file in three local steps
There is no account, upload queue, or server-side transcoding. Select a file, choose the output that fits your use case, then save the converted result.
Choose an audio file
Drop in a WAV, MP3, M4A, OGG, FLAC, AAC, or supported WebM audio file.
Pick the output format
MP3 is selected by default. Choose WAV for uncompressed editing, M4A for efficient AAC playback, FLAC for lossless storage, or OGG when your browser supports Opus encoding.
Convert and download
The browser checks source decoding and output encoding support, processes the file locally, and gives you a new downloadable file.
Built for practical audio work
Local audio conversion with clear controls
See the target format, quality setting and browser compatibility before processing starts. The result is created for a real playback, editing or delivery workflow—not just given a different extension.
Local processing
The selected file is decoded and encoded in this browser. There is no upload queue or account requirement for the conversion itself.
A useful default
MP3 is preselected because it remains the easiest format to open, share, and upload across devices and services.
Compatibility before work starts
FlowPick checks whether the browser can read the source and make the requested output, instead of presenting a completed-looking result that cannot be saved.
Part of the audio flow
A completed Audio Downloader result can be handed here directly, so downloading and format conversion stay in one browser session.
Convert audio for sharing, editing and archiving
Choose the destination first, then create the format that fits it. These common workflows show when conversion is useful and what it cannot improve.
WAV or FLAC → MP3
Share a recording
Create a smaller, broadly playable copy of an interview, voice note, rehearsal, or lecture for colleagues and listeners.
WAV → MP3 or M4A
Prepare an upload
Make a compressed delivery copy when a publishing platform, CMS, or player does not need a large production master.
MP3 or M4A → WAV
Move into an editor
Use WAV when an editing workflow needs uncompressed PCM. This makes a suitable working file; it does not recover detail lost in the original compressed source.
Supported audio → FLAC
Keep an archive copy
Use FLAC when you want a lossless result from what the browser decoded, while accepting a larger file than MP3 or M4A.
Which audio format should you choose?
The best target depends on where the audio will be used. Converting a lossless source to a lossy format reduces file size, but it cannot add detail that was not in the original recording.
MP3 for broad compatibility
Use MP3 for music players, uploads, sharing, and older devices. It is the default because it is widely accepted and typically much smaller than WAV.
WAV for editing
Use WAV when a DAW, editor, or production workflow needs uncompressed PCM audio. Expect a larger file than compressed formats.
M4A/AAC for efficient playback
Choose M4A when you want a modern compressed file for Apple-oriented workflows or AAC-compatible players.
FLAC for lossless archives
Choose FLAC when preserving decoded audio without further lossy compression matters more than file size.
Format comparison at a glance
Use this as a destination guide. The source quality, browser support, and the app that will open the file still matter.
| Output | Best for | Keep in mind |
|---|---|---|
| MP3 | Sharing, uploads, everyday playback | Lossy compression; choose a higher quality setting if file size allows. |
| WAV | Editing and uncompressed PCM workflows | Very large files compared with compressed formats. |
| M4A (AAC) | Efficient playback and AAC-compatible workflows | Lossy; some older devices expect MP3 instead. |
| FLAC | Lossless storage and compatible players | Larger than MP3/M4A, and not every player supports it. |
| OGG (Opus) | Opus-aware web and open-format workflows | Availability depends on this browser's encoding support. |
What this converter does and does not change
Conversion changes the file container and audio encoding. It does not remove DRM, bypass access controls, restore quality lost in an earlier MP3 or AAC encode, or turn a protected stream into an unrestricted file. Some source codecs and OGG/Opus output combinations depend on the browser's available decoding and encoding support.
Before you convert
Start from the best source you have
Converting a low-bitrate MP3 to WAV or FLAC makes a larger file, not a higher-fidelity recording. When possible, use the original WAV, lossless file, or highest-quality download.
Use a compressed format for delivery
MP3 and M4A are generally better for sending and publishing. WAV is usually a working or production format, not the most convenient final download.
Leave the tab open for long files
Processing uses this device's CPU and memory. Keep the tab open, avoid putting the browser to sleep, and close memory-heavy apps if a large conversion struggles.
Check the exported file before replacing anything
Open the converted copy in the target player or editor first. Keep the original until you have confirmed the duration, playback, and destination compatibility.
More audio and media tools
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Transcribe audio to text for free with local AI. Turn recordings into editable text and export TXT, SRT or VTT in your browser, without uploading audio.
Audio Trimmer
Trim MP3, WAV, M4A, FLAC and OGG audio for free. Keep the clip you need or delete an unwanted section with precise timestamps, all locally in your browser.
Audio Downloader
Save a direct audio URL first, then convert the completed file without selecting it again.
M3U8 Downloader
Download a public HLS audio stream before choosing a local output format.
DASH Downloader
Select an audio representation from a public MPD stream and create a downloadable result.
Audio Extractor
Extract the audio track from MP4, WebM, MOV or MKV video for free. Keep the original track or convert it to MP3, M4A, WAV or FLAC, all in your browser.
Audio converter FAQ
Can I convert WAV to MP3?
Yes. Choose a WAV file, keep MP3 selected, then start conversion. The result is re-encoded locally as MP3.
Can I convert OGG or FLAC to MP3?
Yes when the browser can decode the uploaded file. FlowPick checks the source codec before processing and reports a clear error if the browser cannot read it.
Are my audio files uploaded?
No. The conversion worker runs in your browser and FlowPick does not send the selected audio file to a processing server.
Will converting MP3 to WAV improve the sound?
No. WAV avoids a second lossy encode, but it cannot restore detail that was removed when the MP3 was created.
Why is OGG unavailable or failing?
OGG output uses Opus encoding, which depends on browser support. MP3, WAV, M4A/AAC, and FLAC are the more predictable target choices.
Can I convert any audio format?
The tool accepts common audio files, but a result still depends on whether this browser can decode the source codec and encode the selected target. A clear compatibility message appears before or during conversion when that is not possible.
Is there a file-size limit?
FlowPick does not send the file to a conversion server, but processing still uses the memory and performance available in this browser. Very long or high-resolution files can be impractical on a device with limited memory.
Will album artwork and tags be preserved?
Do not rely on this converter to retain embedded artwork, titles, artist tags, chapters, or other container metadata. Check the downloaded file if those details are important to your delivery workflow.
Reproducible checks
Verify Audio Converter with known inputs
Generated test patterns, tones and synthetic speech, with source files and a reference transcript. Use the small fixtures to check a specific operation before processing your own media.
- Reproduce
- Choose the WAV tone, select MP3 and keep the selected bitrate in your test notes. Export and reopen the output in Media Information.
- Inspect the saved result
- Check one audio track, a steady tone and about 2 seconds. Record the actual output size; MP3 padding and settings affect it.
- Counterexample and limit
- A smaller lossy file is not proof of better quality. This tone tests export mechanics, not speech intelligibility or long-file performance.
What has actually been verified
The record below is code-level verification in Node.js, not a complete browser UI or codec-compatibility test. Parser checks use the website’s functions; fixture checks describe inputs only. No AI quality, browser timing or large-file performance score is claimed.
2026-10-27 16:38:27 UTC · Node.js v24.19.0 · win32/x64
WAV fixture properties · Passed
Input-file verification only. It does not certify conversion, AI inference or output quality.
- Duration (s)
- 2
- Sample rate (Hz)
- 44100
- Channels
- 1
- Bit depth
- 16
- Bytes
- 176444
- Peak amplitude
- 0.25
For your own browser test, record browser/version, operating system, output settings and whether decoding, processing and saving all succeed. A reference result is not a promise for another device.