Free MP3 Cutter Joiner is a Windows app for precise audio/video trimming, ordered joining and format conversion—without uploading your files.
Choose Cut when you need a time range. Choose Join when several files should become one timeline.
Add a file, preview it, set the start and end points, then choose an audio or video output. The source remains untouched.
Learn to cut MP3 →Add multiple recordings, check their visible order, choose one output format, and create a single playable file.
Learn to merge MP3 →Bring together MP3, WAV, M4A, FLAC and other supported sources.
Choose MP3 for delivery or WAV/FLAC for a lossless master.
The bundled FFmpeg pipeline handles codecs and containers instead of concatenating raw bytes.
Core test jobs decode generated outputs to the end and confirm source files remain unchanged.
Keep the source list, target format and output destination in view. This reduces accidental mode and path errors.
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Decide when local Windows software is a better fit than uploading audio to a web tool.
Turn a selected part of a video into MP3, WAV or FLAC—locally on your PC.
A practical guide to sample rates, lossy generations and choosing one output format.
Combine audiobook chapters, voice recordings or music clips into one verified MP3.
Trim an MP3 to an exact start and end time without uploading private recordings.
Framework-dependent installer. If .NET Desktop Runtime 8 x64 is missing, setup offers Microsoft’s official runtime.