Convert Always

Runs on your device

MP3 to WAV converter

This page converts MP3 to WAV without installing anything. Everything below explains what changes between the two formats so you know what to expect from the output.

Drop files here

Up to 20 files, 100.0 MB each. Conversion happens on your device — nothing is uploaded.

What is MP3?

MP3 is the lossy audio format that made digital music portable. Psychoacoustic compression removes sound the ear is unlikely to register, cutting size by roughly ten to one.

Standardised by the Fraunhofer Institute and MPEG in 1993.

  • Plays on every device ever built with a speaker
  • Small files at 128-320 kbps, ideal for podcasts and music
  • Mature tooling, tagging and streaming support everywhere

What is WAV?

WAV stores uncompressed PCM audio — the raw digital waveform exactly as it was captured or rendered.

Defined by Microsoft and IBM in 1991.

  • Bit-perfect, lossless quality with zero encoding artefacts
  • The standard interchange format for studios, editing and mastering
  • Instant to decode, with no CPU cost during playback

Why convert MP3 to WAV?

  • WAV is the better fit for recording, editing and mastering before a final compressed export, while MP3 is built for music, podcasts and voice recordings meant for sharing or streaming.
  • It sidesteps the main drawback of MP3: lossy — the discarded detail can never be recovered.
  • You gain bit-perfect, lossless quality with zero encoding artefacts.
  • Compatibility improves where it counts: Every DAW, editor, operating system and browser.

Quality and file size after conversion

Expect the WAV file to be considerably larger. WAV stores everything it is given, so it faithfully preserves the picture MP3 already produced — including any compression artefacts baked in earlier. Converting back and forth cannot restore detail that MP3 discarded.

Compatibility

MP3 opens in Every phone, browser, car stereo, DAW and media player. WAV opens in Every DAW, editor, operating system and browser.

If the file has to work for someone else, choose the format their software already understands rather than the one with the best specification.

Limitations to know about

  • Roughly 10 MB per minute of stereo CD-quality audio
  • Weak metadata and tagging support

When to keep MP3 instead

MP3 is still the right choice for music, podcasts and voice recordings meant for sharing or streaming. Keep the original alongside the converted copy whenever you might need to re-export at a different size or quality — conversion is quick, but recovering discarded detail is impossible.

How to convert MP3 to WAV

  1. 1

    Drag your MP3 file onto the drop zone above, or click to browse. Up to 20 files can be queued at once.

  2. 2

    WAV is already selected as the output format — change it in the dropdown if you need something else.

  3. 3

    Press Convert and watch the per-file progress bar.

  4. 4

    Download the WAV result, or grab everything as a single ZIP when you converted a batch.

Frequently asked questions

Is this MP3 to WAV converter free?

Yes. Every conversion on Convert Always is free, with no account, no watermark and no daily download cap. The site is funded by advertising rather than subscriptions.

Are my MP3 files uploaded to a server?

No. MP3 to WAV runs entirely inside your browser using WebAssembly, so the file never leaves your device. You can even disconnect from the internet after the page loads.

Will converting to WAV reduce the quality?

Expect the WAV file to be considerably larger. WAV stores everything it is given, so it faithfully preserves the picture MP3 already produced — including any compression artefacts baked in earlier. Converting back and forth cannot restore detail that MP3 discarded.

Can I convert several MP3 files at once?

Yes. Add up to 20 files to the queue, convert them in one pass and download the results individually or bundled into a single ZIP archive.

What is the maximum MP3 file size?

Files up to 100 MB each are accepted. Browser-side conversions are limited mainly by your device's memory, so very large video files convert faster on a desktop than on a phone.

Does it work on mobile?

Yes. The converter is built mobile-first and works in Safari and Chrome on phones and tablets. Heavy media conversions are slower on mobile hardware but still run locally.

Related conversions

See every audio conversion we support.

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