Convert Audio to MP3 or WAV
MP3, WAV, M4A, AAC, OGG, Opus, FLAC or the audio of an MP4/WebM video, up to 300 MB
Turn an iPhone voice memo (M4A), a WAV recording, a FLAC track or an OGG file into an MP3 that plays everywhere, or into WAV for editing. Your recording is converted on your device and never uploaded.
- No upload
- MP3 or WAV
- Preview before saving
- Zero sign-up
How It Works
Convert audio in three steps.
Choose a file
Any audio your browser can play, up to 300 MB.
Pick the output
MP3 with a bitrate, or WAV; optionally mono or a lower sample rate.
Listen and download
Play the result on the page, then save it.
How browser audio conversion works
Your browser already knows how to decode the common audio formats in order to play them. The converter asks it to decode the whole file into raw audio, optionally resamples it or mixes it down to mono, and then encodes it again: as uncompressed 16-bit WAV, or as MP3 with the open-source LAME encoder running in the page. Everything happens on your device, which is why it works for private recordings.
Converting from one lossy format to another (M4A or OGG to MP3) loses a little more quality each time. Start from the original recording, or from WAV or FLAC, when you can.
Reads what your browser plays
MP3, WAV, AAC/M4A and FLAC everywhere, OGG and Opus in most browsers, and often the audio track of MP4 and WebM videos.
MP3 bitrate
96 kbps for speech, 192 kbps for most music, 320 kbps for the highest MP3 quality.
Mono and sample rate
Mono halves the size of speech recordings; 16 kHz is plenty for voice.
Preview
Listen to the converted file before downloading it.
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Why Use This Audio Converter
Private audio conversion in the browser.
No upload
Interviews, voice notes and unreleased music stay on your device.
Useful options
Bitrate, sample rate and mono or stereo.
Listen first
A player on the page lets you check the result.
Works on phones
Convert iPhone voice memos without an app.
Frequently Asked Questions
Questions people ask about the Audio Converter.
Choose the .m4a file, keep Convert to on MP3 and press Convert. 128 kbps mono is plenty for speech and gives a small file.
96 to 128 kbps for speech and podcasts, 192 kbps for music, and 320 kbps if you want the best MP3 quality. Higher bitrates make larger files.
The converter relies on your browser's built-in decoders. Some formats are not supported everywhere, for example older Safari versions and Opus, or Firefox and some AAC files. Try a different browser.
No. Only the sound is converted; ID3 tags and artwork are not copied. Add them afterwards with a tag editor if you need them.
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