Audio Trimmer
Trim and cut audio files to the exact segment you need. Works in your browser.
Drop an audio file here or click to browse
Supports MP3, WAV, OGG, AAC, FLAC, M4A
Cut audio down to the part you need
The Audio Trimmer lets you keep just one section of an audio file and discard the rest. You set a start time and an end time in seconds, and the tool produces a new file containing only that segment. It is perfect for clipping out a ringtone, isolating a quote from an interview, removing silence at the start or end of a recording, or grabbing a short sample from a longer track.
Because the trim is done by copying the existing audio stream rather than re-encoding it, the cut keeps the original format and quality and is very fast. The output file uses the same format as the file you loaded, whether that is MP3, WAV, OGG, AAC, FLAC, or M4A.
All processing runs in your browser with FFmpeg compiled to WebAssembly. Your audio is never uploaded to a server, so private recordings stay on your own device from start to finish.
How to trim an audio file
Drag an audio file onto the upload area or click to browse. Once loaded, a player appears and the tool detects the total duration, automatically filling in the end time.
Find your start and end points by playing the audio and using the Set Current as Start and Set Current as End buttons, which capture the player's current position. You can also type exact values into the Start Time and End Time fields, which accept tenths of a second for precise cuts. The tool shows the resulting clip length as you adjust the values.
Click Trim Audio to create the clip. The first run downloads the FFmpeg engine and may take a few seconds. When it is finished, preview the trimmed audio in the player and click Download Trimmed Audio to save it.
Tips for accurate cuts
Use the player's preview and the Set Current buttons to find natural break points, then fine-tune the numbers by a few tenths of a second if a word or beat is clipped. The end time must always be greater than the start time, otherwise the tool will ask you to correct it.
Because trimming copies the stream without re-encoding, cuts are placed near the closest keyframe in some compressed formats, which can occasionally shift the exact start point slightly. If you need sample-accurate edits, trim from a lossless source such as WAV. The downloaded file keeps the same format and quality as the original recording.