Trim Audio Online
Cut audio files to exact start and end points. Supports MP3, WAV, OGG, AAC, M4A, and FLAC. Free, private, and entirely browser-based. Your files never leave your device.
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Supports MP3, WAV, OGG, AAC, M4A, FLAC - up to 500 MB
Tips for trimming audio
Precise cuts
The trimmer re-encodes your audio for accurate start and end points. No keyframe alignment issues.
Easy time selection
Type exact seconds for precision start and end points, or use the preview to find the right moment.
Large files supported
Trim audio files up to 500 MB. Processing speed depends on file size and your device's hardware.
Privacy first
All trimming happens in your browser using WebAssembly. Your audio files are never uploaded anywhere.
Multiple formats
Works with MP3, WAV, OGG, AAC, M4A, and FLAC. The output preserves the original format and quality.
How to trim audio files online
Whether you need to cut the beginning off a recording, extract a segment from a long audio file, or trim silence from the end of a clip, this free audio trimmer makes it easy. The time input fields let you set precise start and end points in seconds.
Unlike server-based tools, this trimmer processes everything in your browser using FFmpeg WebAssembly. Your audio files are never uploaded to any server, ensuring complete privacy. The tool re-encodes the selected range for accurate cuts without keyframe alignment issues.
The trimmer supports MP3, WAV, OGG, AAC, M4A, and FLAC formats, and preserves the original format in the output. The first trim requires a one-time download of the audio engine (~30 MB), after which subsequent trims start immediately. For precision adjustments, use the number inputs to set exact times in seconds.
Frequently asked questions
How do I trim an audio file?
Upload your audio file, set the start and end times in seconds, then click Trim Audio. Download the result when processing is complete.
Is my audio uploaded to a server?
No. All trimming happens locally in your browser using WebAssembly (FFmpeg.wasm). Your files never leave your device.
What audio formats are supported?
The trimmer supports MP3, WAV, OGG, AAC, M4A, and FLAC formats. The output is saved in the same format as the original.
Is there a file size limit?
You can trim audio files up to 500 MB. Larger files take longer to process depending on your device.
Will trimming affect audio quality?
The tool re-encodes the selected range for accurate cuts. Quality loss is minimal with the default encoding settings.