How to Split an MP3 into Equal Parts
Equal-length clips are useful for dividing a lecture, reviewing a long recording, or preparing sections for transcription. SplitTool can decode a supported MP3 in your browser and export its time segments as WAV files.
Open Audio Splitter ↗1. Choose a duration that suits the task
Open the Audio Splitter and select the source. Choose Equal parts and enter the length of each clip in seconds. For two-minute clips, enter 120. This setting is a duration, not a requested number of files.
2. Work out the expected file count
Divide the recording duration by the clip duration and round up. A 600-second source at 120 seconds per clip produces five files. A 630-second source produces six; the final clip contains the remaining 30 seconds. The tool does not pad that last clip with silence.
3. Export and inspect the result
Create the clips and download the ZIP. Open the first and last WAV files and listen near a boundary. Consecutive segments follow the original timeline, but an equal-time cut can land in the middle of speech. Extract a custom time range instead when you need a complete sentence.
4. Understand the WAV conversion
This tool does not export MP3. It decodes the source and writes 16-bit PCM WAV at the decoded sample rate. WAV files are often larger because they do not use MP3 compression. Exporting WAV does not recover detail lost in the original MP3 encoding.
5. If decoding fails
Try a short known-good MP3 or WAV to distinguish a format problem from a memory problem. The input limit is 100 MB, but decoded audio can require much more memory. For very long recordings, use a desktop editor or shorter source files.
Try a small example first
For a simple test, use a 10-second recording and a 4-second segment duration. Expect three files lasting approximately 4, 4, and 2 seconds. This checks the setting before you process a longer source.
Will this separate vocals and instruments?
No. These are consecutive time clips from the same recording. Stem separation is a different operation.
Ready to try it?
Use the tool on this site and check the output before sharing or importing it.
Use Audio Splitter ↗Related reading
How to Extract a Short Clip from a Video