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SPCXTools

Audio Converter

Convert any audio file to MP3, M4A, WAV or OGG — in your browser.

Runs locally — files never leave your device

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How to use Audio Converter

  1. 1Choose an audio file — or a video if you want its soundtrack.
  2. 2Pick the target format and, for compressed formats, the bitrate.
  3. 3Click Convert and wait for the progress bar.
  4. 4Listen to the result and click Download.

Convert audio to any common format

Different devices and apps expect different audio formats: a car stereo that only plays MP3, an editor that wants WAV, a phone that prefers M4A, or a website that needs small OGG files. This converter changes your audio to the format you need, right in your browser, without uploading anything.

Features

  • Input: MP3, WAV, M4A/AAC, OGG/Opus, FLAC, WebM and video soundtracks.
  • Output: MP3, M4A, WAV or OGG.
  • Bitrate: 96 to 320 kbps for compressed formats.
  • Preview the converted file before downloading.
  • Private and free.

Format comparison

Format Type Size per minute Best for
MP3 (192 kbps) Lossy ~1.4 MB Everything, universal playback
M4A / AAC (192 kbps) Lossy ~1.4 MB iPhone, Apple Music, YouTube
OGG / Opus (128 kbps) Lossy ~1 MB Web, Android, voice
WAV (16-bit stereo) Uncompressed ~10 MB Editing, production

Related tools

Cut your audio with Trim Audio, extract the sound from a video with Video to MP3, or record a new clip with the Voice Recorder.

Frequently asked questions

Which format should I choose?
MP3 for maximum compatibility, M4A (AAC) for Apple devices and slightly better quality at the same size, OGG (Opus) for very efficient speech and web audio, and WAV for editing. FLAC files can be opened and converted, but browsers can't create FLAC files.
Does converting improve quality?
No. Converting an MP3 to WAV makes the file larger but can't restore detail that compression removed. Convert from the highest-quality source you have.
What bitrate should I use?
128 kbps is fine for speech and podcasts, 192 kbps for most music and 320 kbps for the best MP3 quality. WAV is lossless and has no bitrate setting.
Is my audio uploaded?
No. Conversion happens in your browser using WebCodecs; your files stay on your device.
Can I convert many files at once?
This tool converts one file at a time. Each conversion only takes a few seconds for typical songs.

Related tools

Trim AudioCut any audio file to just the part you want — ringtones, intros, quotes and voice notes.Video to MP3Pull the soundtrack out of any video and save it as MP3 or another audio format, right in your browser.Voice RecorderRecord your voice in the browser and save it as MP3 — nothing is uploaded.Convert VideoConvert videos to MP4, WebM, MOV or MKV — privately, in your browser.