Audio Trimmer
Trim audio online for free with a simple start-time and end-time workflow. This page is built for quick, practical edits: remove long pauses, cut intros, keep the highlight quote, and export a lightweight MP3 clip without uploading your source file. The first release intentionally avoids complex timeline controls so you can finish common trimming tasks faster and with fewer mistakes.
Drop an audio file here or click to select
Supports MP3, WAV, M4A, AAC, OGG, and FLAC
Trim by entering start time and end time. Output format: MP3
Max file size: 500MB
Time-based trimming
Enter exact start and end times for reliable clips without dealing with a complex timeline.
Local device processing
Audio stays on your device, suitable for drafts, interviews, and private voice files.
Stable MP3 output
The first version exports to MP3 for broad compatibility and faster sharing.
What is audio trimming
Audio trimming means keeping only the time range you need and discarding the rest. It is different from full audio editing because the main decision is where to start and where to end. For many real workflows, this is enough. You may have a voice memo with extra silence, a webinar clip with a long setup, a podcast draft with repeated takes, or an interview where only one quote matters. A focused trimmer is faster than opening a full DAW when the job is simply cutting a clean segment.
- Keep only useful segmentsRemove dead air and non-essential sections so listeners get to the point quickly.
- Fast prep for publishingCreate short clips for social posts, previews, and internal review without rebuilding the whole track.
- No full editor neededFor straightforward cuts, a start/end tool is often the cleanest and most efficient workflow.
Core features
A lightweight release focused on stable, high-utility trimming
Start and end time controls
Input exact time values with decimal support for precise cuts without timeline complexity.
Duration-aware validation
The tool checks start >= 0, end > start, and prevents end time from exceeding track duration when metadata is available.
Broad input compatibility
Upload MP3, WAV, M4A, AAC, OGG, and FLAC source files for common voice and music workflows.
Stable MP3 output strategy
The first version exports trimmed clips to MP3 for practical playback compatibility across web, mobile, and messaging apps.
Predictable file naming
Exported files append a -trimmed suffix so trimmed clips are easy to identify.
Browser-local privacy
Trimming runs with FFmpeg.wasm on your device, so source files are not uploaded for remote processing.
Why use this audio trimmer
Many users only need one clean segment, not a full production suite. This page is optimized for that exact scenario: quick cuts, stable output, and no onboarding friction.
How to trim audio online
A straightforward six-step workflow
Step 1 - Open the trimmer
Go to the trimmer section on this page. No account, no plugin, and no desktop install is required.
Step 2 - Upload your source audio
Select a local audio file or drag and drop it into the upload area. Supported formats include MP3, WAV, M4A, AAC, OGG, and FLAC.
Step 3 - Confirm duration
Wait for metadata to load so the interface can show total duration and help validate your selected end time.
Step 4 - Enter start and end times
Input start and end in seconds. You can use decimals for tighter control. End must be greater than start.
Step 5 - Trim the clip
Start processing and monitor progress. The tool validates your range first to prevent avoidable conversion failures.
Step 6 - Download the result
Download the trimmed file with a -trimmed suffix. Test playback in your destination app to confirm the cut points feel natural.
Audio trimming can be implemented in multiple ways. Some tools try to keep original codecs exactly as-is, while others standardize output for compatibility. In this first release, we choose a stable MP3 output strategy to reduce playback edge cases across browsers, social upload flows, and lightweight mobile apps. This is especially useful for teams that need predictable delivery and do not want to troubleshoot format-specific quirks on every exported clip.
Input support remains broad so users can bring files from different sources: MP3 from old exports, WAV from DAW sessions, M4A from mobile recordings, AAC from compressed pipelines, OGG from web tools, and FLAC from higher-quality archives. Even though output is standardized for this release, the input compatibility keeps the tool practical for mixed real-world workflows.
If your project requires preserving original codec identity and sample characteristics end-to-end, you may still prefer a dedicated desktop editor for the final master export. But for publishing clips, review snippets, short highlights, and social-ready extracts, standardized MP3 output is often a faster and less error-prone choice.
The trimmer runs inside your browser using FFmpeg.wasm. Source files are processed locally and do not need to be uploaded to a remote job server. This design helps when trimming internal voice notes, customer interviews, test recordings, or other content that should remain private.
Common failure causes include invalid time ranges, corrupted source files, and local resource pressure from very large media. If trimming fails, verify that end time is greater than start, ensure the selected segment is within total duration, and close heavy browser tabs before retrying. For very long recordings, test with a short range first.
This page is intentionally not a full audio workstation. There is no multi-track arrangement, noise reduction chain, EQ graph, or automation lane. The goal is dependable segment extraction for 80% everyday trimming scenarios.
Related tools
Use these pages if your job requires format conversion or visual video edits instead of audio-only segment cuts.
Designed for practical audio cuts
Focused trimming workflow for fast publishing and review
Input formats
6
MP3, WAV, M4A, AAC, OGG, FLAC
Validation rules
3
Range checks before processing
Output naming
-trimmed
Predictable clip management
What users say
How teams use this trimmer in production workflows
Olivia Reed
Support Training Lead
We trim long support-call recordings into short learning clips for onboarding. The start/end workflow is exactly what we needed.
Takumi Sato
Podcast Coordinator
I use it to extract quotes for social teasers. It is faster than opening a full editing session for every small clip.
Liam Foster
Content Strategist
Local processing is important for pre-release voice material. The error checks also prevent bad range exports.
Audio trimmer FAQ
Common questions on range validation, output, and troubleshooting
Can I trim audio without uploading files?
Yes. The trimmer processes files locally in your browser. Your source audio is not uploaded to our conversion server.
What time range values are valid?
Start time must be greater than or equal to zero. End time must be greater than start time. If duration is available, end time cannot exceed it.
Which formats can I upload?
The tool accepts MP3, WAV, M4A, AAC, OGG, and FLAC as source input in this version.
Why is output MP3 in this release?
We prioritize stable cross-device playback and simple delivery for the first version. MP3 output reduces compatibility friction for common use cases.
How is the output file named?
Exported files use your original base name and append -trimmed before the extension for easier organization.
What should I do if trimming fails?
Check your start/end values, retry with a smaller range, and close heavy browser tabs to free memory. Also confirm the source file is not damaged.
Trim the exact segment you need
Cut your audio clip first, then use related tools for format conversion or video-side editing workflows.