Video creators & editors
Sync background music to a 15s reel, a 60s short or a 3-minute YouTube edit without losing a beat.
Upload an audio file to get started
Adjust Music Duration Online with AI
Need a soundtrack that fits your video to the second? The Studio AI Adjust Music Duration tool lets you shorten music with AI, extend audio tracks and trim songs to a precise length — directly in your browser, with no installation and no watermark. Whether you produce YouTube videos, TikTok shorts, podcasts, ads or presentations, you can finally make any song match the exact duration you need.
The fastest way to trim or extend an audio track
Traditional audio editors are powerful but overkill when all you want is to cut a song to 30 seconds or loop a track to 2 minutes. Our AI-assisted waveform editor gives you a clear visual of your music, lets you drag region handles to pick the perfect segment, or simply type the target duration in seconds. The result is exported as a high-quality WAV file in one click.
- Trim MP3, WAV, M4A, OGG, AAC and FLAC files online.
- Set an exact target duration — perfect for ad spots, reels and intros.
- Lossless processing using the Web Audio API — no quality drop.
- Free, private and browser-based — files never leave your device.
Use cases: who needs to adjust music duration?
Marketers & ad makers
Cut licensed tracks to 6s, 15s or 30s spots to meet broadcast and social ad specs.
Podcasters & streamers
Lengthen intros, shorten outros and create perfectly timed jingles for every episode.
Teachers & presenters
Adjust background music to match slide timings or e-learning chapters with accuracy.
How to adjust music duration in 3 steps
- Upload your audio file by dropping it into the editor or clicking to browse.
- Select the region on the waveform, or switch to Duration mode and type the exact length in seconds.
- Click Generate and download your trimmed or extended track as a WAV file.
Frequently asked questions
How do I adjust music duration online?
Upload your file, drag the region handles or type a target length in seconds, then click Generate. Your audio is trimmed instantly and ready to download.
Can I extend a music track to make it longer?
Yes. Studio AI can lengthen songs by looping selected regions seamlessly so the track matches any duration you need.
Is the AI music duration tool free?
Yes. The tool is 100% free, runs in your browser and requires no signup.
What audio formats are supported?
MP3, WAV, M4A, AAC, OGG and FLAC are supported. Output is a high-quality WAV file.
Will trimming or extending the music reduce quality?
No. Audio is processed losslessly using the Web Audio API, keeping the original sample rate and clarity.
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