Convert audio between MP3, WAV, FLAC, OGG and M4A — or drop a video and keep just the sound. Powered by ffmpeg in WebAssembly: everything runs on your device.
⏚ No uploads — files are processed on your own device
Drop an MP4, MOV, WebM or MKV and pick an audio format — the video track is discarded and only the sound is kept. This is the quickest way to turn a recorded lecture, concert clip, or voice memo video into a file you can listen to anywhere.
MP3 plays everywhere and is the safe default — 192 kbps suits most music, 128 kbps is plenty for podcasts and audiobooks, 320 kbps is the ceiling for quality. M4A (AAC) sounds slightly better than MP3 at the same bitrate and is native on Apple devices. WAV is uncompressed and huge — use it when an app demands it or for editing. FLAC is lossless like WAV but roughly half the size, ideal for archiving. OGG is the open format used by many games and streaming tools.
Most online converters upload your file to a server, convert it there, and send it back. This one runs ffmpeg — the same engine behind professional audio and video software — compiled to WebAssembly and executed locally in your browser. The engine downloads once (about 31 MB) the first time you add a file, then your browser caches it. Your files themselves never travel anywhere, which also means there is no upload queue and no size cap beyond your device's own memory.
This tool processes your files privately. No uploads, no accounts. Audio and video are read and converted locally on your own device — they are never transmitted to us or to anyone else, so we never see them, never store them, and have nothing to sell or share. This page does show advertising provided by Google, which may set cookies; you can choose whether ads are personalised, and either way your files stay on your device. See how Google uses data.