Every audio job, done on your device

Convert, trim, join, boost, and analyze audio for free. Every tool runs right here in your browser, so your files are never uploaded anywhere.

Files never leave your deviceNo accountNo watermarkFree
🎬MP3 to MP4 with ImageTurn an MP3 and a cover image into a video for YouTube, TikTok, and Instagram.For creators 🎵WAV to MP3Shrink big WAV recordings into shareable MP3s. 🔊MP3 to WAVTurn an MP3 back into a full quality WAV for editing. 🎙️M4A to MP3Voice memos and M4A files into MP3s that play anywhere. 💿FLAC to MP3Lossless FLAC into portable MP3, at the bitrate you pick. 🎧OGG to MP3OGG Vorbis files into MP3s every player accepts. ✂️MP3 CutterTrim the start and end with a waveform you can see. 📱Ringtone MakerCut a clip and export it as an Android MP3 or iPhone ringtone. 🔗Audio JoinerJoin MP3s and other audio into one file, with crossfades. 🗜️Compress MP3Make an MP3 smaller by choosing a lower bitrate. 📢Volume BoosterMake quiet audio louder, or normalize it to a steady level. 🎛️Pitch and Tempo ChangerChange pitch and speed independently of each other. 🥁BPM and Key FinderFind the tempo and musical key of any song or loop.

Why people switch

Many audio sites work by uploading your file to their server, doing the job there, and letting you download the result. That means a copy of your voice memo, your interview, or your unreleased song sits on a computer you do not control.

AUDIOeverything works the other way. The tools load once, like any web page, and then every job runs on your own phone, tablet, or computer. You can even turn off your internet after the page loads, and the tools keep working. That is the whole idea: your audio stays yours.

Two tools are worth a special mention. MP3 to MP4 with Image turns a track and its cover art into a postable video, which is the fastest way to get audio onto video-first platforms. The BPM and Key Finder reads the tempo and musical key of a song or loop right in the page, which DJs, producers, and sample hunters usually need a separate app for.

Questions, answered

Is it really free? Yes. Every tool on this page is free for everyday use, with no trial and no watermark on your files. Free use comes with a generous daily allowance, which is more than enough for normal jobs.

Where do my files go? Nowhere. They are opened and processed in your browser, on your device, and they are never sent to a server.

Does it work on a phone? Yes. The site is built for phones first, and you can add it to your home screen like an app.

Is there a file size limit? Most tools are limited only by the memory on your device. MP3 to MP4 with Image caps audio at 10 minutes and 25 MB, and says so on its page.