MP3 is a lossy compressed format that saves space by discarding inaudible detail; WAV is a lossless format that keeps every sample. Converting MP3 to WAV restores the full PCM waveform for editing, so you get a larger file but no further quality loss in the output.
When you convert MP3 to WAV, the browser decodes the compressed MP3 back into raw audio and writes it into a WAV container. WAV stores uncompressed 16-bit PCM samples, so the output is roughly ten times larger (about 10 MB per minute of stereo audio), but it opens in virtually any device, player and editing software.
Why convert to WAV? WAV is the standard for audio editing, DJ software, CD burning and video production. Because it is uncompressed, you can edit and re-save the file many times without piling up extra quality loss. This tool runs entirely in your browser: your file is decoded and re-encoded on your device and never uploaded.
How to use it: upload your MP3 (drag and drop, or use the file picker), the converter decodes it and writes a WAV file, then download. The output keeps the original sample rate with 16-bit PCM depth, and a typical song converts in a few seconds.
About bit depth: the output is 16-bit PCM, the most compatible WAV format in existence. If your MP3 was originally made from a 24-bit master, that extra precision is already gone - the WAV will faithfully carry the 16-bit audio the MP3 contained, no more and no less.
WAV versus other lossless formats: FLAC and ALAC also preserve audio perfectly while taking about half the space. Why choose WAV then? Universal compatibility in professional tools, and zero decoding overhead - every DAW, sampler and editing suite reads WAV natively. For everyday listening, FLAC is smaller; for editing pipelines, WAV is the working standard.
A practical workflow: convert to WAV when a file enters an editing session, keep it WAV through the whole edit, export the finished mix as WAV, and only then create an MP3 copy for sharing. Keeping WAV at both ends of the pipeline prevents quality loss from stacking across generations.
Do you lose anything in this direction? No - MP3 to WAV is lossless in the sense that nothing new is lost: the WAV contains exactly what the MP3 contained. The catch is that the MP3 had already lost detail in its own compression, and no conversion can bring that back.
A note on privacy and safety: the conversion runs locally in your browser using the Web Audio API, so no audio ever travels over the network. Sensitive recordings - voice memos, interviews, unreleased music - stay on your device from start to finish. No upload, no account, no waiting queue.
| MP3 | WAV | |
|---|---|---|
| Quality | Good (lossy) | Perfect (lossless) |
| File size | Small (~1/10 of WAV) | Very large (uncompressed) |
| Compression | Lossy | None |
| Compatibility | Universal — plays everywhere | Universal but takes space |
| Best for | Everyday listening & sharing | Editing, DAWs & mastering |
Yes - completely free with no limits. Conversion runs in your browser with no server costs.
- Not necessarily. If your MP3 came from an original recording, the WAV carries the MP3's audio exactly. The WAV can never be better than the MP3 you started from.
- Yes. WAV is accepted by every video editor (Premiere, DaVinci, Final Cut, CapCut) and every DAW, and it is the recommended import format.
- No. The converter runs in your browser using the Web Audio API. No download, no installation, no account.
- Yes, as many as you like, one after another. Each file is processed locally, with no queue and no daily limit.
- No. The original is only read in memory. The converter writes a brand-new WAV file and never touches the source.
No. Decoding and encoding happen locally in your browser - files never leave your device.
No - the detail lost in the original MP3 compression cannot be recovered. WAV output preserves the MP3 quality exactly without adding new loss.
- WAV stores uncompressed 16-bit PCM audio, which works out to about 10 MB per minute of stereo sound. MP3 trades file size for quality with heavy compression.
- Anything your browser can decode: MP3, WAV, M4A (AAC), FLAC, OGG and more. The exact list depends on your browser.
- Yes. This site has a dedicated WAV to MP3 converter that re-encodes your file to MP3 at 192 kbps.
- No hard limit, but very large files need more memory because decoding happens in the browser. Songs of typical length convert in seconds.
- Yes. Once the page and the MP3 encoder are loaded, conversion runs fully locally; no internet connection is needed.
- 16-bit PCM is the universal WAV standard that every device and editor supports. It represents the full quality of CD audio, which is already higher than MP3 quality.