Our free online audio cutter lets you trim any audio file with precise control — using a visual waveform editor directly in your browser. No upload, no waiting, completely private.
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Visual Waveform
See your audio as a waveform — drag handles to set exact cut points visually.
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Play & Preview
Play the full file or preview just your selected cut before downloading.
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Precise Timing
Enter exact start and end times in seconds down to 0.1 second accuracy.
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8 Output Formats
Export as MP3, WAV, M4A, OGG, OPUS, FLAC, AAC or WebM.
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100% Private
Files never leave your device. No upload, no storage.
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Instant Processing
WAV cuts are instant. MP3 encodes in seconds using lamejs.
📋 How to Cut Audio Online
Step 1 — Upload: Click the upload area or drag your audio file. Supported: MP3, WAV, M4A, AAC, OGG, FLAC, WMA, OPUS. Max 50 MB.
Step 2 — Set cut points: Drag the green handles on the waveform to set your start and end points. Or type exact times in seconds in the fields below the waveform.
Step 3 — Preview: Click Play to hear the full file, or Preview Cut to hear only your selected section.
Step 4 — Choose format: Select your output format — MP3, WAV, M4A, OGG, OPUS, FLAC, AAC, or WebM.
Step 5 — Cut & Download: Click the button. Your cut audio is processed and downloaded instantly — no email, no account needed.
❓ Frequently Asked Questions
How do I cut an MP3 file online for free?
Upload your MP3 at audio-join.com/mp3cutter, drag the green handles on the waveform to set your start and end points, then click Cut & Download. Everything runs in your browser — no account needed.
Can I preview my cut before downloading?
Yes! Click Preview Cut to hear only your selected region before cutting. Click Play to hear the full file. You can also click anywhere on the waveform to seek to that position.
How precise can I cut the audio?
Very precise. You can drag the waveform handles or type exact times in seconds down to 0.1 second accuracy. The duration bar shows exactly how long your cut will be.
What output formats are supported?
MP3 (via lamejs encoder), WAV (lossless, instant), M4A (Apple/iPhone), OGG, OPUS, FLAC, AAC, and WebM. All encoding happens in your browser.
Are my audio files uploaded to a server?
No. All cutting, trimming, and encoding happens 100% in your browser using the Web Audio API. Your files never leave your device.
What is the maximum file size?
Each file can be up to 50 MB. For larger files, consider splitting them first using our Audio Merger tool.
Can I cut WAV or M4A files too?
Yes! The cutter supports all major audio formats as input: MP3, WAV, M4A, AAC, OGG, FLAC, WMA, OPUS. You can also choose any output format regardless of the input format.