Audio Time Adjuster

Change audio duration to any target length – time‑stretch or compress while preserving pitch (MP3, WAV, OGG, M4A, FLAC)

Drag & drop an audio file or click to browse

How to adjust audio time:

  1. Select an audio file (MP3, WAV, OGG, M4A, FLAC, etc.)
  2. Enter the desired target duration in seconds (e.g., 30.0 for 30 seconds)
  3. The tool automatically calculates the speed ratio (original / target)
  4. Choose output format (MP3 recommended) and bitrate in the settings panel
  5. Click "Adjust Time & Export" – the audio will be stretched or compressed to exactly match the target length while preserving pitch
  6. Download the time‑adjusted result

All processing happens in your browser using SoundTouchJS – files never leave your device. Pitch remains unchanged.