Audio Cutter / Trimmer
Trim and cut audio files right in your browser without any upload.
Drop your audio file here
or click to browse
Supports MP3, WAV, OGG, M4A, FLAC, AAC
How to Use Audio Cutter / Trimmer
Click the upload zone or drag and drop an MP3, WAV, OGG, M4A, FLAC, or AAC file. The file is processed entirely in your browser.
Drag the handles on the waveform or enter exact timestamps in the Start Time and End Time fields.
Click "Preview Selection" to listen to the trimmed portion before exporting.
Choose your output format and click "Trim & Download Audio" to save the edited file.
Features & Benefits
Instant Results
Real-time output as you type. No waiting, no page reloads, no server processing.
100% Private
Everything runs in your browser. Your data never leaves your device — ever.
Mobile Friendly
Fully responsive design tested on Chrome, Firefox, Safari, and Edge across all devices.
Always Free
No account, no subscription, no hidden fees. Unlimited usage, forever free.
Supported Formats
Common Use Cases
About Audio Cutter / Trimmer
Why Trim Audio Files?
Audio trimming is one of the most common audio editing tasks. Common reasons include: creating custom ringtones from songs, removing silence or dead air from podcast recordings, extracting the best section of a music track for a video, cutting out intros/outros for a cleaner listen, and reducing file sizes for web use by removing unused portions.
How Browser-Based Audio Processing Works
Our audio cutter uses the Web Audio API — a powerful browser technology that allows digital audio processing directly in your browser. Your audio file is decoded into raw PCM (Pulse-Code Modulation) data, the selected portion is extracted, and the result is encoded back into an audio file for download. At no point does your file touch any server.
Fade In and Fade Out Effects
Abrupt cuts in audio are jarring to listeners. Adding a fade-in (gradual volume increase at the start) and fade-out (gradual decrease at the end) creates professional-sounding transitions. Our tool lets you add 0–10 seconds of fade to either end of your trimmed audio. A 0.5–1 second fade is usually enough for most uses; longer fades create dramatic outro effects.
Audio Format Guide
- MP3 — Best for music and podcasts; universal compatibility; lossy compression
- WAV — Lossless; best for editing workflows; large file size
- OGG — Open source alternative to MP3; good quality-to-size ratio
- M4A — Apple's audio format; good quality; used by iTunes
- FLAC — Lossless compression; smaller than WAV; audiophile favorite
Tips for Clean Audio Cuts
- Cut at zero-crossing points (where the waveform crosses zero) to avoid clicks and pops
- Add at least 0.1 seconds of padding before the actual start of audio
- Use fade in/out to smooth transitions even if the cut point is clean
- Preview the cut before downloading to verify it sounds right
Frequently Asked Questions
No. The Audio Cutter uses the Web Audio API, which processes your file entirely inside your browser. Your audio never leaves your device, so your files remain completely private.
You can import MP3, WAV, OGG, M4A, FLAC, and AAC files. Export is available in WAV format (lossless), which can be converted to other formats after download.
There is no server-imposed size limit since processing is done locally. Practical limits depend on your browser and device memory — most modern devices handle files up to 200MB comfortably.
Yes! The export settings panel lets you add fade-in and fade-out effects (0–10 seconds) to make your trim sound more professional, avoiding abrupt starts or endings.