Free Audio Converter – Fast & Private
Convert any audio or video file to MP3, M4A or WAV locally in your browser — your recordings never leave your device
How to convert audio or video to MP3 / M4A / WAV
Choose or drag in your audio or video file — nothing is uploaded, it stays on your device.
Pick MP3, M4A or WAV — conversion starts the moment you drop the file, right in your browser.
Download your audio file.
Everything happens right here in your browser: your file is converted locally on your device with WebAssembly FFmpeg and is never uploaded to any server. Because there is no upload, there is no practical length limit either — multi-hour recordings and files up to 8GB convert just fine, and even a huge file starts instantly. Read more: how in-browser conversion works →
About audio or video to MP3 / M4A / WAV conversion
Drop in almost any sound-carrying file — M4A voice memos, WAV exports, FLAC rips, WMA archives, or entire videos — pick your output format, and get back an audio file that works where you need it: MP3 for universal playback, M4A for Apple-quality AAC, or WAV for editing.
Unlike other online converters there is no upload: the conversion runs in your own browser with WebAssembly FFmpeg. That means a 4GB lecture recording starts converting instantly, and private voice notes stay private.
Frequently asked questions
Audio: MP3, M4A/AAC, WAV, FLAC, OGG, Opus and WMA. Video: MP4, MOV, MKV, AVI, WebM, WMV, TS, MPG, FLV and 3GP — the audio track is extracted and converted.
MP3 (192–320kbps) plays on everything — the safe default for sharing and listening. M4A (AAC 192–320kbps) is slightly better quality at the same size and native on Apple devices. WAV is uncompressed 16-bit PCM — much larger files, but the right input for audio editors and transcription tools that want raw PCM.
When the source audio already matches the target codec — an MP3 stream converted to MP3, or AAC audio (most MP4/MOV videos) converted to M4A — the stream is copied without re-encoding: zero quality loss, done in seconds even for huge files.
No. The conversion runs entirely in your browser using WebAssembly (FFmpeg). Your recording never leaves your device — that is also why there is no upload wait, no queue and no file-size pricing. For personal recordings, lectures and meetings this matters more than anywhere else.
Up to 8GB on desktop browsers and 2GB on mobile — big enough to pull the audio out of a multi-hour lecture or meeting recording. There is no limit on the number of files, no signup and no watermark.
192–320kbps, which is transparent for speech and very close to transparent for music. The audio stream is decoded once and encoded once — there is no extra generation loss from server-side re-processing.
Yes — completely free and unlimited, with no watermark, signup or daily quota. Because the conversion runs on your own device instead of our servers, there are no processing costs to charge for.
Yes. It runs in any modern browser — Chrome, Safari, Edge or Firefox — on Windows, macOS, ChromeOS, Linux, iOS and Android. There is nothing to install.
Audio-only work is fast: there is no video to re-encode, so even the soundtrack of a long video converts in well under real time. Files whose audio is already MP3 are rewrapped without re-encoding and finish in seconds.
Yes. Our sister site Red Panda Transcribe (redpandatranscribe.com) turns the MP3, M4A or WAV you export here into text right in your browser — like this tool, nothing is uploaded, and there is no time limit and no signup. It exports TXT, SRT and VTT.