WAV to MP3 Converter

Follow the WAV to MP3 guide for bitrate choices, size examples and a saved-file checklist.

Convert a WAV recording into a shareable MP3

Use this WAV to MP3 converter when you have an uncompressed PCM recording and need a smaller listening copy. Choose the output bitrate, preview the converted audio and compare its actual size against the WAV source. Processing runs in your browser, without sending the selected recording to a server or requiring an account.

How to convert WAV to MP3

1. Select one mono or stereo PCM WAV file. The input must be no larger than 30 MiB and no longer than ten minutes.
2. Choose an MP3 bitrate. The default is 192 kbps; 128, 256 and 320 kbps are also available.
3. Review the estimated MP3 size. If the ending needs a fade, enable it before creating the audio so both operations use the original WAV.
4. Create the audio, then listen to the original and the processed MP3. The players let you compare without playing both at once.
5. Check the completed size comparison and download the MP3. Keep your WAV master for later editing.

Why WAV and MP3 sizes differ

Uncompressed PCM stores samples at a fixed sample rate, bit depth and channel count. MP3 instead uses lossy compression to fit audio into a much smaller data budget. A stereo 16-bit WAV at 44.1 kHz uses about 1,411 kbps of audio data, compared with 192 kbps for the default MP3 output. The difference explains why a listening copy can take substantially less space.

That comparison describes audio payload, not a guaranteed file-size reduction. Short clips, headers and metadata change the exact numbers. The result panel measures the actual bytes of both files and reports the percentage smaller or larger. Its MiB units use 1,048,576 bytes; a decimal MB uses 1,000,000 bytes.

What happens to the audio settings?

The output is constant-bitrate MP3. A 48 kHz source exports at 48 kHz; other accepted source sample rates export at 44.1 kHz. Mono stays mono and stereo stays stereo. The tool does not offer multichannel downmixing, sample-rate selection, loudness normalization or a batch queue.

Basic title, artist and album metadata are copied when supported. Do not assume that every WAV metadata field, cue point or embedded image will survive conversion. If tags matter for your delivery, inspect the downloaded file in your audio player. MP3 encoding may also add a small amount of framing or delay around the original duration.

Use the bitrate quality guide to compare presets. Start from the WAV master each time you try another setting. Converting an MP3 back to WAV does not restore lost detail, and converting that WAV again adds another lossy encoding step.

Supported WAV files and practical limits

This page accepts uncompressed PCM WAV, not every codec that can be stored in a WAV container. An unsupported or damaged recording produces an error instead of silently switching to a server. Choose an MP3 through the MP3 compressor or bitrate converter; this page is specifically for WAV input.

Large WAV files can reach the 30 MiB size limit well before ten minutes. Browser memory must also hold decoded audio and the result, so available memory matters beyond the on-disk size. Keep the tab open, avoid starting several conversions at once, and download the result before selecting a new file.