How to convert MP3 to WAV
- Use Choose files or drop your MP3 onto the tool. Review the file list; you can add up to eight files.
- Keep WAV selected. Set Sample rate, Channels and Bit depth to match the receiving app, then press Convert to WAV.
- When conversion finishes, use Download WAV beside each result. With multiple results, Download All saves a ZIP.
Why convert MP3 to WAV?
An audio editor, video project or submission form may require PCM WAV instead of MP3. A WAV working copy also avoids another lossy encoding stage between edits. Check the destination's sample rate and bit depth first; changing the format is unnecessary when the recipient already accepts your MP3.
MP3 vs WAV: what changes?
MP3 uses lossy compression. WAV is a container that can hold different kinds of audio; this converter specifically writes little-endian integer PCM, not floating-point WAV or compressed WAV. Expect more sample data to store and transfer than with a typical MP3 of the same recording.
For example, one minute of 44,100 Hz stereo PCM uses about 10.58 MB at 16-bit or 15.88 MB at 24-bit, before its header. An MP3 averaging 192 kbps uses about 1.44 MB for that minute, before tags. These are calculations using decimal MB, not measured savings or a fixed ratio for every file.
Does MP3 to WAV improve quality?
No. Decoding cannot recover detail discarded when the MP3 was made. A larger file, 24-bit setting or higher sample rate does not recreate that information. When possible, start from the original lossless recording; otherwise keep your MP3 and use WAV only as the working or delivery copy you need.
WAV output settings
- Sample rate: Original keeps the MP3's supported source rate. Choose 44100 Hz or 48000 Hz only when required; a different rate resamples the audio.
- Channels: Original keeps mono or stereo. Mono downmixes stereo. Stereo does not add a new stereo image to a mono recording.
- Bit depth: Choose 16-bit or 24-bit integer PCM; 24-bit is the default. Use what your editor or submission form accepts. Neither setting reverses MP3 compression.
Supported files and practical limits
Use mono/stereo MPEG Layer III MP3 in CBR or VBR. Each file is limited to 32 MB and 10 minutes, and its decoded PCM must fit 64 MB. Devices reporting 2 GB RAM or less use a 16 MB PCM limit; other phones may also need smaller recordings. The worker processes files sequentially, with up to 64 MB of retained batch results. Tags and artwork are not copied. A damaged file or a different codec renamed .mp3 can fail; the file-row error explains the problem without changing your original.
Read WAV vs MP3 for editing and sharing, or compare FLAC vs MP3 for a music library. For a different source or output, use the Audio Converter.
Verify local processing. Read the audio software notices.