Audio Cutter
Trim an audio file to a start and end time in your browser and keep the same format. Free, private, no signup or upload.
About the Audio Cutter
This free audio cutter trims a clip out of any audio file — set a start time and an end time and the tool keeps just that section. It is ideal for making a ringtone, grabbing a quote from a podcast, removing dead air at the beginning, or shortening a voice note before sharing.
Cutting runs entirely in your browser through FFmpeg WebAssembly, so your audio is never uploaded. The engine (about 30 MB) is fetched from a CDN on first use and cached, so the first cut is slower than the ones after it. The output keeps the same format as your input where possible.
The times are given in seconds. If you leave the end time blank the cut runs to the end of the file. Because the section is re-encoded, the cut is accurate to the moment you choose rather than snapping to the nearest keyframe. Files up to 100 MB are supported.
How to Use the Audio Cutter
- 1Choose an audio file (MP3, WAV, M4A and more), up to 100 MB.
- 2Enter the start time in seconds, and an end time (or leave it blank for the end).
- 3Click Cut Audio and wait for the progress bar.
- 4Preview the trimmed clip and download it.
Frequently Asked Questions
Is my file uploaded to a server?
No. All processing runs in your browser using FFmpeg compiled to WebAssembly. Your file never leaves your device — only the converter engine is downloaded, once.
Why is the first run slow?
The first time you use any converter here, the browser downloads the FFmpeg core (about 30 MB) from a CDN and compiles it. It is then cached for the session, so later runs are much faster.
How do I set the start and end?
Enter the times in seconds — for example 15 to 42 keeps the audio from 15 to 42 seconds. Leaving the end blank keeps everything from the start time to the end of the file.
Will the cut lose quality?
The clip is re-encoded so the cut lands exactly where you set it. For lossy formats this is a single re-encode, so any quality change is minimal; lossless WAV stays lossless.
Is there a file size limit?
Yes, 100 MB per file. Because everything runs in your browser's memory, very large files can be slow or run out of memory. Trim long clips first if you hit the limit.