Audio Trimmer & Cutter

Cut MP3, WAV & M4A

Cut MP3, WAV, M4A, and other supported audio files by selecting start and end times. Preview the selection and export the result.

MP3 • WAV • M4A • AAC • OGG • FLACReal-Time DSP Preview (Speed, Fades, EQ & Gain)

Drop your audio file here, or click to browse

Cut MP3, WAV, M4A, AAC, OGG, FLAC, and WebM files. Preview speed, fades, EQ, and volume changes live in real time before exporting.

What is Audio Trimmer & Cutter?

Audio Trimmer & Cutter is a fast, browser-based audio editing utility that lets you cut MP3, WAV, M4A, AAC, OGG, FLAC, and WebM audio files by selecting exact start and end times on an interactive waveform. Whether you want to extract a 30-second ringtone, trim silence from a podcast recording, remove an unwanted cough from a voiceover, or add smooth fade-in and fade-out transitions to a music clip, everything runs 100% locally in your browser using the Web Audio API. Your audio files are never uploaded to any server, ensuring instant processing and complete privacy.

How to Use Audio Trimmer & Cutter

Upload your audio file or load the demo track

Drag and drop an MP3, WAV, M4A, OGG, FLAC, or WebM audio file into the upload box, or click 'Load Sample Audio' to test the waveform editor immediately.

Select your trim or cut mode

Choose 'Keep Selection (Trim)' to keep only the highlighted audio between the start and end markers, or 'Remove Selection (Cut Out)' to delete the middle section and join the remaining parts seamlessly.

Set start and end times on the waveform

Drag the left (Start) and right (End) handles directly on the interactive waveform, use the quick preset buttons (e.g., First 15s, Ringtone 30s), or fine-tune with millisecond-accurate nudge controls.

Preview and apply audio effects

Click 'Preview Selection' to listen to your trimmed clip in real time. Optionally add smooth Fade In / Fade Out curves, adjust volume gain, normalize peak loudness, or change playback speed.

Export and download your audio

Select your preferred output format (MP3, Lossless 16-bit WAV, Studio 24-bit WAV, or M4A), customize the filename, and click Export to save the trimmed file instantly.

Key Features

Supports MP3, WAV, M4A, AAC, OGG, FLAC, Opus, and WebM audio files

Interactive high-DPI waveform visualizer with zoom (1x to 8x), playhead scrubbing, and draggable start/end handles

Dual editing modes: Keep Selection (trim ends) and Remove Selection (cut out middle & splice together)

Millisecond-accurate start and end timestamp controls with keyboard shortcuts (Space, I, O, L)

Built-in audio mastering: smooth Fade In & Fade Out envelopes, Volume Gain (up to 200%), and Peak Normalization

Playback speed & tempo adjustment (0.5x to 2.0x), Reverse Audio mode, and Stereo-to-Mono downmixing

Lossless MP3 frame slicing and studio-grade 16-bit / 24-bit PCM WAV export

100% client-side privacy — zero server uploads, no file size caps, and no watermarks

Tips & Best Practices

1
Add a 0.3s to 1.0s Fade In and Fade Out when creating ringtones or music loops so the clip starts and ends smoothly without abrupt clicks.
2
Use the Zoom controls (2x, 4x, 8x) on the waveform when cutting spoken dialogue or podcasts to find the exact pause between words.
3
Switch to 'Remove Selection (Cut Out)' mode when you want to delete a mistake or silence in the middle of a recording while keeping the beginning and end.
4
Enable 'Normalize Peak' if your voice recording sounds too quiet — it boosts the volume to optimal loudness without distortion.
5
Press 'I' while the audio is playing to set the Start marker at the current playhead, and 'O' to set the End marker on the fly.

Why Use Our Online Audio Trimmer & Cutter?

Audio Trimmer & Cutter processes and generates audio directly inside your browser using modern Web Audio and Speech APIs. Your text and voice recordings stay private on your device with zero server uploads required.

Clear AudioBrowser-native synthesis

Instant PlaybackListen in real time

Privacy FirstProcessed on device

100% FreeNo usage limits

Frequently Asked Questions

Which audio formats can I cut with Audio Trimmer & Cutter?

You can upload and cut MP3 (.mp3), WAV (.wav), M4A (.m4a), AAC (.aac), OGG (.ogg), FLAC (.flac), and WebM (.webm) audio files supported by your browser's Web Audio engine.

Are my audio files uploaded to a server?

No. All audio decoding, waveform rendering, trimming, fade processing, and exporting happen 100% locally inside your web browser. Your personal recordings and music files never leave your device.

What is the difference between 'Keep Selection' and 'Remove Selection'?

'Keep Selection (Trim)' keeps only the audio between your Start and End markers and discards everything outside. 'Remove Selection (Cut Out)' deletes the section between your Start and End markers and joins the before and after segments together.

Does cutting an MP3 reduce its audio quality?

When you export an MP3 without altering speed or DSP effects, our tool can slice the native MP3 frames directly with zero re-encoding loss. When exporting as WAV (16-bit or 24-bit PCM), the output is completely uncompressed and lossless.

Can I use this tool on my phone to make a ringtone?

Yes! The waveform handles support touch dragging on Android and iOS. You can use the '30s Ringtone' preset, add a 1-second fade in/out, preview the loop, and download your custom ringtone directly to your phone.

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