Make a recording easier to use
Convert audio to MP3 for everyday listening or WAV for an editor that needs uncompressed audio. Keep the original and save a separate copy in the format your app accepts.
Find the right format → YOUR AUDIO. YOUR DEVICE.
Free Online Audio Converter
Use this online audio converter to turn recordings into MP3, WAV, FLAC, M4A, or OGG. Choose your files, adjust the output, listen to the result, and download it without uploading your audio.
✓ Free to use✓ No sign-up✓ Files stay on your device
1 Add your audio Files stay on your device
Choose audio files
Drop files here or choose them from your device.
Up to 10 files · 100 MB each · 25 MB each on touch devices
2 Choose the result
Sample rate and channels Optional
Custom settings. Keep your original file and listen to the result before sharing. Only the first audio track is used; artwork and tags are not kept. Help choosing audio settings.
The first conversion downloads about 32 MB of audio resources. Download progress appears here after you start. Your browser may reuse cached resources on later visits; your files stay on your device.
FIVE AUDIO OUTPUT FORMATS
MP3·WAV·FLAC·M4A·OGG
FOR YOUR NEXT AUDIO TASKConvert audio
Convert audio
for everyday tasks.
A recording to share. A file to edit.
Sound from a video to keep.
Keep personal audio on your device
When you convert audio here, your browser processes the file locally. The first conversion downloads about 32 MB of processing resources; that download does not include your recording.
How privacy works →Get sound or words from a recording
Extract audio from a saved MP4 video, or turn up to five minutes of speech into an editable text draft. Transcription has its own language choices and first-use download.
Extract video audio → Transcribe a recording → Transcribe a video →Which audio format should you choose?
Convert audio from common MP3, WAV, M4A, FLAC, and OGG recordings. Choose an output below. Unusual encodings, protected tracks, and damaged files may need an export from their original app.
- MP3 for sharing
- Widely accepted by phones and players. Start at 192 kbps for music, or 96–128 kbps for voice. MP3 is lossy; a higher bitrate cannot restore missing detail.
- WAV for editing
- Uncompressed 16-bit PCM for compatible audio projects. Keep the sample rate or match your app’s requirements. Files may become much larger.
- FLAC for lossless audio
- Avoid another lossy encode of the decoded audio. Converting a compressed source to FLAC does not recover its original quality.
- M4A or OGG for compatible apps
- M4A uses AAC compression; OGG uses Vorbis. Check that your player or target app accepts the format before choosing it.
You can convert audio in batches of up to 10 files. Files are handled in order; download results individually or save the finished batch in one ZIP. Each file can be up to 100 MB, or 25 MB on touch devices. Use a computer for larger files, and save every result before closing the tab.
Need help with settings? Understand bitrate, sample rate, and channels. For a video file, check the video-to-audio limits before starting.
START WITH YOUR FILE
Choose your conversion
Choose how you want to convert audio. Each shortcut opens the right output with advice for your input file.
MP3NCM to MP3Turn saved NCM music files into MP3 listening copies.MP3Audio to MP3Turn recordings and music into easy-to-share MP3 files.WAVAudio to WAVMake a 16-bit PCM WAV for an editor or audio project.MP3Video to MP3Extract the sound from a saved video, including MP4.MP3M4A to MP3Share an iPhone voice memo or another M4A recording.MP3WAV to MP3Make a large WAV recording easier to send and store.WAVMP3 to WAVUse an MP3 in a project that requires PCM WAV.MP3FLAC to MP3Create a portable MP3 copy while keeping the FLAC original.
Choose your files
Select files from your device or drop them into the tool. Try the WAV sample to explore the process before choosing your own recording.
Pick an output format
Choose MP3 for sharing, WAV for editing, or another supported output. Sample rate and channels are optional settings. Artwork and tags are not kept; only the first audio track is used.
Convert, listen, and download
Keep the tab open while processing. Check the output size, listen to the result, then download. Find a download on your phone if you need help saving it.
A LITTLE CLARITY
Audio conversion questions
Is this online audio converter free?
Yes. Format conversion and local transcription are free, with no account required. Each tool shows its file and device limits before you start.
Are my files uploaded anywhere?
No. Conversion and transcription run in your browser. The converter downloads its processing resources from this site. Transcription also downloads a speech model from Hugging Face; the model download does not send your recording.
Why does the first conversion take longer?
Your browser first downloads the audio engine, about 32 MB. Later runs may reuse cached resources. Conversion time also depends on the file, output settings, and your device.
Can I convert files on my phone?
You can select files in a modern mobile browser. Touch devices are limited to 25 MB per file to reduce memory pressure. Keep the tab open; use a computer for larger files or speech transcription.
Why is my file unsupported or silent?
Check that the original plays with sound. Damaged files, unusual codecs, and DRM-protected audio may not work. An Audacity AUP3 file is a project: open it in Audacity and export audio first. A video without an audio track cannot produce sound.