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✂️MP3 Cutter Online
Trim any audio file or extract and cut the audio from a video in seconds. Set the start and end with minute/second precision, preview the result, and download the cut clip. No signup, no install, works in every browser.
Trim audio or extract + cut audio from video
Drag & drop a file below. All major audio and video formats accepted.
1. Upload Audio or Video
or drag & drop. Accepts audio/*, video/* (MP3, WAV, M4A, MP4, MOV, FLAC, MKV, WEBM…)
2. Set Cut Range
Need audio processing or a media platform?
Need audio processing or a media platform?
Custom audio-processing tools, creator platforms, APIs and mobile apps — built to scale from day one.
How to Cut MP3 and Audio Files Online (4 Steps)
This tool turns any audio or video file into a short, trimmed clip in under two minutes — no app, no DAW, no codec confusion. The backend does frame-accurate seeking so you don't sit through re-encoding of a 2-hour file just to slice a 30-second ringtone.
- Upload an audio or video file. Drop an MP3, WAV, M4A, FLAC, OGG, AAC, or AIFF file into the upload zone. You can also drop a video (MP4, MOV, MKV, WEBM, AVI) — the cutter demuxes and extracts the audio track automatically, no extra step.
- Set start and end times. The cutter reads the file duration with
window.Audio, then pre-fills the End boxes to the whole file. Update Start (Min, Sec) and End (Min, Sec) to the slice you want. For a 45-second clip starting at 00:15, set 0:15 → 1:00. - Click Cut Audio Now. The tool sends just the file ID and the four numeric markers to the backend. It performs a keyframe-accurate seek and returns a cut file in seconds — even for 2+ hour recordings.
- Preview in the player and download. Hit play on the HTML5 audio player to confirm the slice is exactly where you want it. Click Download Cut Audio to save the file to your device with a timestamped filename.
Popular post-processing tricks: combine this cutter with the transcript downloader to pull the exact quote time-codes from a podcast, then snip the clips. Or cut a song intro to the first beat-drop before setting it as a short-form video soundtrack.
Audio Formats, Bitrates & Common Use Cases
| Format / Feature | Spec | Typical Use |
|---|---|---|
| MP3 (MPEG-1 Layer 3) | 128–320 kbps / 44.1 kHz stereo | Podcasts, ringtones, social audio, universal playback |
| M4A / AAC | 96–256 kbps / HE-AAC option | Voice memos, iPhone/iMessage clips, audiobooks |
| WAV (PCM) | 16–24 bit / 44.1–96 kHz lossless | DAW sessions, mastering, samples, production masters |
| FLAC | Lossless, ~50% of WAV size | Music library, archival, lossless distribution |
| OGG / OPUS | 32–256 kbps / ultra-low latency | Streams, Discord clips, WebRTC recordings |
| Video → audio extract | MP4, MOV, MKV, WEBM, AVI | Interviews, B-roll SFX, meeting recordings, lecture capture |
| Cut precision | 1-second numeric (Min / Sec) | Ringtones, short-form snippets, quote clipping |
| File size / length | Generous; 2h+ multi-GB OK | Podcast episodes, live shows, sermons, classes |
Why use this tool?
✂️ Cut video audio in one step
Drop a video and set the cut times directly. No intermediate "extract audio → save → re-upload" loop. The tool accepts every major video container (MP4, MOV, MKV, WEBM, AVI) and pulls the audio track transparently.
⚡ Instant results on long files
Server-side keyframe seeking means you don't decode a 2-hour file just to keep a 30-second clip. 2-hour podcasts return the trimmed slice in seconds instead of minutes.
🎧 Zero-quality-loss on frame boundaries
When the input is MP3 and the cut points fall on MP3 frame boundaries, the cutter stream-copies without re-encoding. The output file is mathematically identical audio to the original in the kept range.
🧹 Auto-cleaned storage
Uploads live just long enough to process your cut and are then deleted automatically. Nothing stays in cold storage, nothing is logged or indexed — and you never created an account in the first place.
Frequently Asked Questions
How do I cut an MP3 or audio file online?+−
Which audio and video formats does the MP3 cutter accept?+−
Can I extract audio from a video and cut it in one step?+−
How are the start and end times entered?+−
Is the cut done client-side or does the file get uploaded to a server?+−
What bitrate is the cut MP3 exported at?+−
Is there a file size or length limit?+−
Will cutting an MP3 reduce its audio quality?+−
What are popular things creators cut audio for?+−
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