Free Audio Tools Online – Trim, Speed Changer & BPM Detector
Browser-based audio editing covers the most common quick tasks without requiring Audacity or a DAW install: trimming silence from the start or end of a recording, adjusting playback speed for a podcast or lecture clip, and detecting the BPM of a track before mixing or syncing to video. All three tools process audio locally in your browser - no upload to a server required.
Audio Trimmer
Trim and cut any audio file online free - no upload to server. Set start and end points with the Start/End sliders, preview the cut, and download the trimmed clip as a WAV file instantly in your browser.
Audio Speed Changer
Change the playback speed of an audio file your browser can decode, from 0.25x to 4x - works entirely in your browser with no uploads required. Note: speed change is done by resampling, so pitch shifts along with speed rather than staying preserved.
BPM Detector
Estimate the tempo of a song in beats per minute from an audio file your browser can decode, such as MP3, WAV or OGG. Analysed on your device.
How to use these tools
Select the tool that matches your task, open it, and follow the steps below.
- Open the audio tool that fits your task - trimming, speed adjustment, or BPM detection.
- Upload your audio file and adjust the settings - trimming range, playback speed, or tap the BPM detector.
- Download the processed audio file or note the detected BPM and use it in your project.
Common ways to use these tools
- Cut the silence or the unwanted part from the start or end of a recording and save the clip as a WAV file.
- Speed up a lecture or podcast clip, or slow down a song to learn it.
- Estimate a track's tempo in beats per minute before mixing it or syncing it to video.