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Audio Converter

Transform your audio files between MP3, WAV, OGG, FLAC, AAC, and more — directly in your browser with zero quality loss.

Supports MP3, WAV, OGG, FLAC and more

How to use Audio Converter.

4 simple steps to get started.

1
Step 1

Upload audio

Select the audio file you want to convert.

2
Step 2

Choose format

Pick your desired output format from the list.

3
Step 3

Adjust settings

Optionally set bitrate and sample rate.

4
Step 4

Download

Get your converted file instantly.

Why use Audio Converter?

Everything you need to know about audio converter.

Audio Converter — free & online

Transform your audio files between MP3, WAV, OGG, FLAC, AAC, and more — directly in your browser with zero quality loss. No downloads, no sign-ups, and no accounts. Editing and preview run locally in your browser using the Web Audio API; exporting sends your file over an encrypted connection to our processing server, which deletes it as soon as your download finishes.

How does Audio Converter work?

Simply upload your audio file — MP3, WAV, OGG, FLAC, or M4A — and use our intuitive editor to make your changes. Upload audio, Choose format, Adjust settings, Download. Once you're satisfied, export the result in your preferred format instantly.

Who is Audio Converter for?

Whether you're a podcaster, musician, content creator, or just someone who needs a quick audio edit, Audio Converter is built for you. It works on any device — desktop, tablet, or mobile — across all modern browsers including Chrome, Firefox, Safari, and Edge.

What conversion changes, and what it cannot

Converting re-encodes the audio into a different container and codec. It can reduce file size, make a file playable on a device that rejected the original, or turn a compressed file into an uncompressed one for editing. What it cannot do is add back detail that was already discarded. Converting a 128 kbps MP3 to FLAC produces a lossless copy of a lossy file: the size goes up, the quality does not.

That direction matters when you are choosing a target. Going from lossless to lossy loses a little and is normal. Going from lossy to lossy loses a little again on top of what was already gone, so avoid it when you have the original. Going from lossy to lossless is only worth doing when a tool downstream refuses to read compressed audio.

Sample rate and bitrate

Sample rate can be set anywhere from 8,000 Hz to 192,000 Hz. In practice there are only a few values worth using: 44,100 Hz is the CD standard and the right default for music, 48,000 Hz is the video and broadcast standard and the better choice if the audio will be married to picture, and 16,000 Hz is plenty for speech destined for transcription. Raising the sample rate above the source gains nothing — the extra samples are interpolated, not recovered.

Bitrate applies to the lossy formats and is where the real size-versus-quality decision sits. 128 kbps is acceptable for speech, 192 kbps is a reasonable floor for music, and 320 kbps is the practical ceiling for MP3 where further increases are hard to hear. Leave it empty to let the encoder pick a sensible default.

Tip: Halving the bitrate roughly halves the file size. Halving the sample rate also halves the usable frequency range, which is a much more audible change — adjust bitrate first when you need a smaller file.

Picking a target format

MP3 for maximum compatibility, AAC when you want better quality at the same bitrate and your playback is in the Apple ecosystem, OGG for open-format requirements and low-bitrate efficiency, WAV when a tool needs uncompressed input, FLAC to archive losslessly at about half the size of WAV, and M4R only for iPhone ringtones. The conversion itself runs on the server after you export; the uploaded file is deleted immediately afterwards.

Frequently asked questions.

Everything you need to know about Audio Converter.

Which formats are supported?

You can export to MP3, WAV, OGG, FLAC or AAC. On the input side anything our decoder recognises works, which covers MP3, WAV, OGG, FLAC, AAC and M4A.

Will I lose audio quality?

It depends which way you are going. Converting to WAV or FLAC is lossless. Converting to MP3, AAC or OGG is lossy, and going from one lossy format to another compounds the damage — always start from the highest-quality source you have rather than re-encoding an MP3 you made earlier.

Can I batch convert files?

Not at the moment. The converter handles one file per export, so a batch has to be run a file at a time.

Is it free?

Yes — no account, no install and no watermark. Files up to 500 MB are accepted, with a fair-use cap of 20 exports a minute.

How do I convert MP3 to WAV online for free?

Drop the MP3 in, choose WAV as the output and export. WAV is uncompressed, so expect the file to grow roughly tenfold — a 4 MB MP3 lands at around 40 MB at 44.1 kHz stereo.

What bitrate should I use when converting to MP3?

128 kbps is fine for speech, 192 kbps is a sensible default for music, and 320 kbps is the highest offered. The choices are 64, 128, 192, 256 and 320 kbps plus Auto, and they only affect lossy formats — picking one for WAV or FLAC changes nothing.

Should I change the sample rate?

Usually not. Leave it at 44.1 kHz, which is what CDs and most music use. The 22.05 kHz and 11.025 kHz options exist for voice recordings where a smaller file matters more than fidelity, since they halve or quarter the frequency range.

Can I convert the audio from a video file?

Use the Audio Extractor for that — it pulls the audio track out of MP4, MOV, MKV, AVI or WebM. The converter expects an audio file as its input.