WAV to MP3 converter
Convert WAV to MP3 to make a recording easier to send. Choose a bitrate, compare file sizes, preview the audio, and download privately in your browser.
Choose WAV files
Drop files here or choose them from your device.
Up to 10 files · 100 MB each · 25 MB each on touch devices
MP3 uses lossy compression. Keep the original WAV for editing or archiving, and listen to the converted copy before sharing.
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.
How to convert WAV to MP3 and reduce file size
Use this WAV to MP3 converter for a recording that is too large to share comfortably. Start at 96 or 128 kbps for speech, or 192 kbps for music. A lower bitrate usually makes a smaller file, but the result depends on the WAV encoding, duration, channels, and your chosen settings.
- WAV input
- Unprotected WAV recordings with a readable audio track. Unusual or damaged WAV files may need a fresh export.
- MP3 output
- 192 kbps at 44.1 kHz by default. Choose another bitrate or sample rate if your use calls for it.
- Size comparison
- Each completed file shows its actual input and output size. There is no fixed compression ratio or target-size setting.
Choose a WAV recording, or try the spoken WAV sample.
Select a bitrate for speech or music. Keep stereo for music unless you need mono.
Convert WAV to MP3, compare the sizes, listen, and download the MP3 copy.
Listen to a real WAV to MP3 example
This short, synthetic recording says: “The meeting starts at nine. Please bring your notes.” The result below was made with this tool. Compare the sound and size, or try the sample above with your own settings.
The MP3 is smaller than this uncompressed WAV. The original is kept separately. MP3 players may show a slightly different length because of audio padding. These sizes describe this sample only. Duration, source audio, format, and settings change your result; a smaller file is not a measure of better sound.
WAV to MP3 questions
How much smaller will WAV to MP3 make my file?
There is no single ratio. Duration, original encoding, sample rate, channels, and MP3 bitrate all affect the result. Compare the actual sizes shown after conversion; the paired example on this page represents only that recording.
Is WAV to MP3 lossless?
No. MP3 discards some audio detail to reduce storage needs. Keep the original WAV for future edits, especially for music or recordings you cannot replace.
How do I make a WAV fit an attachment limit?
Convert at a lower MP3 bitrate and check its size. If it is still too large, remove the finished item and convert the original again at a lower setting, or split it in an audio editor. This tool cannot guarantee an exact size.
Can I convert several files at once?
Add up to 10 files. They are processed one after another, and you can download each finished result or save the batch in one ZIP. Each file can be up to 100 MB, or 25 MB on touch devices. Use a computer for larger recordings.
Where is my download, and what happens to the original?
Choose Download beside a finished file. Look in your browser’s Downloads or the Files app on your phone; some browsers offer a sharing menu. The original is unchanged. Results are kept only in this tab, so download them before refreshing or leaving.