Audio Trimmer
Cut an audio file down to the start and end time you choose.
About this tool
Cuts an audio file down to the start and end time you choose. Drag either handle on the slider — or type an exact value (down to the millisecond) into the boxes below it — and use the player above to listen and check your cut points; dragging a handle seeks the player to that position. Runs entirely in your browser; your audio is never uploaded anywhere.
Your browser's own audio engine decodes the file, so the exact trim is sample-accurate — there's no keyframe snapping like there sometimes is with video.
Frequently asked questions
- What's the difference between MP3 and WAV output?
- WAV is uncompressed — larger files, no quality loss, and instant to produce. MP3 is compressed and much smaller, with a small, generally inaudible quality trade-off; 320 kbps is close to transparent for most listeners.
- Why is the output's sample rate different from my original file?
- Your browser's audio engine decodes the file at its own internal sample rate (commonly 44.1kHz or 48kHz) rather than always preserving the source file's exact rate — this is a browser behavior, not something this tool controls.
- Is my audio uploaded anywhere?
- No — decoding, trimming, and encoding all happen entirely on your device. Nothing is sent to any server.