Convert MP3 audio to uncompressed WAV. Free, private, runs in your browser.
100% private — your files and text never leave your browser. All processing happens locally on your device.
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MP3 is a lossy compressed audio format — it achieves small file sizes by discarding audio frequencies most listeners can't perceive. WAV is an uncompressed audio format that preserves every sample of the original recording. WAV files are significantly larger but offer true lossless audio quality, making them the standard for professional audio work.
Audio editing software, digital audio workstations (DAWs), and professional production workflows often require WAV input. Some applications and systems don't support MP3 decoding. WAV is also the expected format for sound effects in games, ringtones on some platforms, and archival audio storage.
Convertful uses FFmpeg WASM to decode your MP3 and output the raw PCM audio data in a WAV container. Note that converting from MP3 to WAV doesn't recover quality lost during MP3 encoding — it uncompresses the existing audio data into lossless format. The conversion happens entirely in your browser.
Yes. Your audio files are processed locally. No server upload, no data collection.
WAV is an uncompressed format used in audio editing, music production, and professional workflows.
Yes. WAV is uncompressed, so files are significantly larger than MP3 (roughly 10x). This is expected — you're trading size for lossless quality.
No. Converting MP3 to WAV doesn't restore quality lost during MP3 compression. The WAV file will be lossless from that point forward, but the original MP3 compression artifacts remain.
16-bit / 44.1 kHz matches CD quality and is a safe default for general use. Pick 24-bit / 48 kHz when importing into a DAW for mixing — it gives editing headroom without wasting space. 32-bit float is useful when further processing could push levels past 0 dBFS without clipping. Leave Sample set to Source to inherit whatever rate the MP3 was encoded at.