Audio Trimmer: Cut & Trim Audio Online
Cut and trim audio files with millisecond precision to create ringtones, clip podcast highlights, and remove unwanted silence.
Privacy & Security Guarantee
Your file is sent securely to our server for conversion and deleted automatically after 30 minutes.
How to Use the Audio Trimmer & Cutter (Precision Millisecond Editing)
- 1Upload your audio file (MP3, WAV, AAC, M4A, OGG up to 200 MB).
- 2Enter your desired Start Timestamp (e.g., 00:00:15).
- 3Enter your desired End Timestamp (e.g., 00:00:45).
- 4Click 'Start Conversion' to execute the trim on our server.
- 5Download your trimmed MP3 audio file.
Formula & How It Works
FFmpeg Precision Timestamp Seeking
Applies fast input seeking (-ss) followed by precise stream trimming (-to) with re-encoding for frame-accurate cuts.
Worked Examples
Creating a 30-Second Phone Ringtone
Input: song.mp3, Start: 00:00:45, End: 00:01:15
Explanation: Extracts the chorus of a track starting at 45 seconds.
Trimming Intro Silence from a Voice Memo
Input: memo.wav, Start: 00:00:04, End: 00:02:30
Explanation: Removes 4 seconds of initial background noise before speech begins.
Grabbing a Podcast Soundbite
Input: interview.mp3, Start: 00:14:20, End: 00:15:00
Explanation: Extracts a quote for social media sharing.
Frequently Asked Questions
How do I specify the trim start and end times?▼
Use standard hh:mm:ss format. For example, to start at 1 minute and 15 seconds, enter 00:01:15.
What audio formats can I trim?▼
You can trim MP3, WAV, AAC, M4A, OGG, FLAC, and WMA files.
Does trimming reduce audio quality?▼
No, the output is encoded using the high-fidelity LAME MP3 codec at 192 kbps, preserving rich acoustic quality.
How long are uploaded files saved?▼
All files are permanently and automatically deleted from our servers within 30 minutes of conversion.
Is this tool free?▼
Yes, 100% free with no file limits.
Quick Reference & Conversion Table
| Timestamp Format | Example | Interpreted Time |
|---|---|---|
| hh:mm:ss | 00:01:30 | 1 minute and 30 seconds from start |
| hh:mm:ss | 01:15:00 | 1 hour and 15 minutes from start |
| mm:ss | 02:45 | 2 minutes and 45 seconds from start |
⚠️ Common Pitfalls to Avoid
- •Setting an end timestamp that occurs before the start timestamp.
- •Entering end duration instead of the end timestamp (our tool uses the exact end time in the track).
- •Using non-standard timestamp formats (use standard hh:mm:ss or mm:ss).
💡 Practical Real-World Uses
- •Creating custom ringtones and notification sounds for iPhone and Android.
- •Trimming long Zoom meeting recordings and lecture audio down to the essential content.
- •Clipping audio samples for music production and DJ sets.
Server Trimming vs Browser Web Audio Trimming
- ✓Browser-based Web Audio decoding struggles with large audio files over 50MB, often crashing mobile browser tabs.
- ✓Server-side FFmpeg streams large files efficiently, handling full 1-to-2 hour audiobooks and multi-track recordings effortlessly.
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