About MP4toMP3Now

MP4toMP3Now is a free collection of more than 200 audio and video tools: converters for MP4, MP3, MOV, MKV, WAV, FLAC and dozens of other formats, plus compressors, cutters, joiners and other everyday tools.

Your files stay on your device

Most online converters upload your file to a server, convert it there and send it back. MP4toMP3Now works differently. When you use a tool, a conversion engine based on FFmpeg, compiled to WebAssembly, is loaded into your browser, and the work happens on your own computer or phone. Your videos and recordings are never uploaded to us, so we never see, store or share them.

That also means there is no queue, no waiting for uploads and downloads, and no limit on how many files you convert.

Why we built it

Converting a phone video to MP3 or shrinking a clip for WhatsApp should take seconds, without installing software, creating an account or trusting a stranger's server with personal footage. We built the tools we wanted to use ourselves: fast, private and honest about what they do.

What we do not do

• We do not download videos from YouTube, TikTok, Instagram or any other website. Every tool works only with files that are already on your device.
• We do not remove copy protection (DRM) from purchased films, music or audiobooks.
• We do not add watermarks to your files.

How the site is funded

The tools are free and supported by advertising. Ads never appear inside the tool area or next to download buttons.

Open-source technology

The conversions are powered by FFmpeg through the ffmpeg.wasm project. We are grateful to the developers of both projects.

Get in touch

Questions, ideas or a format we should support? Visit the contact page.