Convertidor
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Local audio guide

Audio conversion guide: create WAV in your browser

Convertidor decodes compatible audio in your browser and exports WAV locally. Your original file does not enter an upload queue, and no account is required.

Start MP3 to WAV

Choose the right output

Need a WAV for editing or playback?

Use the working MP3 to WAV converter when another app requires uncompressed PCM audio. It reads a local file and saves a 16-bit WAV; the original stays on your device.

Use the MP3 to WAV converter

Need a smaller MP3 or M4A?

MP3 and M4A export are not available here. WAV is uncompressed, so this tool is not a way to reduce file size. Use a converter with the encoder you need instead of changing the file extension.

Starting with a video file?

Choose a video saved on your device only if your browser can decode its audio track. The output is the entire audio track as WAV. Convertidor cannot fetch a YouTube or TikTok URL.

Estimate the WAV size before starting

Uncompressed 16-bit PCM uses two bytes per sample per channel. At 44.1 kHz stereo, one minute is about 10 MB. Actual size depends on the decoded sample rate, channel count, and duration; a small compressed source can make a much larger WAV.

Start a conversion

  1. 1. Choose a local file

    Choose an MP3, WAV, M4A, or MP4 file. Files are limited to 250 MB, and your browser must support the encoded format.

  2. 2. Choose WAV

    The available export is an uncompressed 16-bit PCM WAV. Conversion processes the full file; trimming and other encoders are not enabled.

  3. 3. Download the result

    Download the WAV when conversion finishes. WAV is usually larger than MP3 because it stores uncompressed samples.

Know the limits

Conversion cannot restore detail already removed by MP3 compression; it saves the samples decoded by your browser as WAV.

If a file cannot be decoded, try a current Chrome, Edge, Safari, or Firefox, or choose a compatible audio file.

MDN documentation for browser audio decoding

Processing happens in your browser. The privacy policy explains requests your browser may make to Google when advertising is enabled. Read the privacy policy

If conversion fails

Check what the browser can decode

A file extension alone does not prove the browser can decode its codec. Try a current browser, check that the file plays locally, and use a supported recording if decoding still fails.

Check size and device memory

Inputs over 250 MB are rejected. A long file may also need substantial memory when decoded and written as WAV; try a shorter or smaller local recording if your browser runs out of resources.