Split Audio Into Equal Parts
Split long audio file online in seconds. Enter your chunk length, get perfectly divided files. One setting. That's it.
Start Splitting - It's FreeNo signup required. Your files stay on your device. Need one section instead of equal parts? Use the MP3 cutter.
Six tools, one rule: nothing is uploaded
Splitting is the main job. The cutter, the trimmer and the pause remover use the same engine on the same file, in your browser.
The Easiest Way to Split Audio File Into Equal Chunks
Other tools overcomplicate a simple task. We don't.
Other Audio Splitters
- Complex timeline editors you don't need
- Forced account signup
- Upload files to their servers
- Watermarks or export limits
- Manual split point selection
ChunkAudio
- One simple setting: chunk length
- No signup. Ever.
- 100% browser processing - files stay private
- No watermarks, no limits
- Smart silence detection included
How to Split Your Audio File in 3 Steps
Three steps. Under 30 seconds. Done.
Upload Your Audio
Drag & drop or click to upload. Supports MP3, WAV, M4A, FLAC, OGG, and more.
Set Chunk Length
Cut audio into segments by duration - 30 minutes, 5 minutes, or any length you need.
Download Your Files
Get all your chunks as individual files or download everything in one ZIP.
Key Features That Set ChunkAudio Apart
No bloat. No learning curve. Just the features you actually need.
True Privacy
Your audio never leaves your browser. Zero server uploads. We literally can't see your files.
Smart Silence Detection
Our tool finds natural pauses near your split points, so you don't cut mid-sentence.
All Major Formats
Split MP3 file, WAV, M4A, FLAC, OGG, AAC, and more. No format conversion needed - just upload and split.
Lightning Fast
Modern Web Audio API processing. A 2-hour file splits in under 10 seconds on most devices.
Bulk ZIP Download
Download all your chunks in one organized ZIP file. No clicking 50 download buttons.
Free to split, no catch
Split any file, any length, no signup, no watermark. The optional Pro licence adds MP3 export and removes ads. One payment, no subscription.
Common Use Cases for Equal-Parts Splitting
From podcasters to researchers - anyone who needs to split audio into equal parts.
Podcasters
Divide MP3 into equal parts for social media distribution. Create 60-second Instagram Stories or 3-minute TikTok clips from your full podcast episodes.
Audiobook Creators
Divide long recordings into uniform chapter lengths. Create consistent 30-minute or 1-hour segments for distribution platforms.
Transcription Prep
Use ChunkAudio as your audio chunker for transcription services with file length limits (15-30 min). Split interviews, meetings, or lectures into chunks that meet AI transcription requirements.
Musicians & DJs
Split live recordings, DJ sets, or rehearsal sessions into individual tracks. Pre-segment long mixes for easier editing.
Language Learners
Split audio into 10 minute chunks for easier study sessions. Break down hour-long language courses into bite-sized segments you can review on the go.
Researchers & Academics
Process long interview recordings or lecture captures. Split meeting recordings before sharing with collaborators - all without uploading to third-party servers.
Your Files Stay Completely Private
ChunkAudio is a truly private audio splitter - here's how it works:
100% Browser-Based Processing
Unlike other online audio splitters, ChunkAudio processes everything locally in your web browser, in its own audio engine. Your audio files are never uploaded to any server.
No Signup Required
No email, no account, no tracking cookies. Just open the tool and start splitting. We don't collect personal data; usage statistics are anonymous and cookie-free.
Works Offline
Once the page loads, you can even disconnect from the internet and continue splitting audio. Perfect for sensitive recordings like interviews, medical dictation, or confidential meetings.
Perfect for sensitive audio: Patient recordings, legal dictation, confidential interviews, private meetings, and any audio you don't want on someone else's server.
Frequently Asked Questions
How do I split an audio file into equal parts?
Simply upload your audio file, enter your desired chunk length (e.g., 30 minutes), and click Split. ChunkAudio will split your audio into equal parts automatically and package them all into a convenient ZIP file for download.
What audio formats are supported?
ChunkAudio supports all major audio formats including MP3, WAV, M4A, FLAC, OGG, and AAC. If your browser can play it, we can split it into equal parts.
Is there a file size limit?
There is no upload limit because nothing is uploaded. WAV and MP3 files of any length work, even multi-hour recordings: WAV is split by copying bytes, MP3 and AAC by copying whole frames, M4A, M4B, MP4 and MOV by copying the audio samples. Free downloads are WAV; Pro keeps the parts in the original format. Other compressed formats (FLAC, OGG) have to be decoded into your device's memory first, which tops out at roughly 2–3 hours of audio on most computers and less on phones. For longer files in those formats, convert to MP3 or WAV first.
Are my files really private?
Yes! ChunkAudio is a completely private audio splitter. Your files never leave your browser - all processing happens locally on your device, in the browser's own audio engine. We never upload, store, or access your audio files.
How does smart silence detection work?
Our silence detection feature analyzes your audio to find natural pauses near your desired split points. When enabled, ChunkAudio uses this smart silence detection to ensure cuts happen between words or sentences rather than mid-speech.
Can I split audio into a specific number of parts?
Yes! You can specify either a chunk duration (e.g., 30 minutes) or let ChunkAudio calculate the duration needed to split your file into a specific number of equal parts. Both options give you perfectly divided segments.
What format are the output files?
Free downloads are WAV files, which keeps maximum audio quality with no compression artifacts and plays everywhere. With the optional Pro licence you can also download every part as MP3 (192 or 320 kbps), a fraction of the size. Splitting itself is free either way.
Can I split MP3 files online for free?
Absolutely! ChunkAudio is a free MP3 splitter with no hidden costs. No signup required, no watermarks, no upload limits and no limit on the number of splits. Use our free MP3 splitter for unlimited audio files including WAV, M4A, FLAC, OGG, and AAC.
How do I split a WAV file into parts?
Our WAV cutter makes it easy: upload your WAV file, set your desired chunk length in minutes or seconds, and click Split. This online WAV cutter divides your file into equal-length segments that you can download individually or as a ZIP file.
Does this work without downloading software?
Yes! ChunkAudio is a browser-based audio splitter - no download or installation required. Everything runs entirely in your web browser, working on Windows, Mac, Linux, and mobile devices. Just open the website and start splitting.
How do I split an audio file into two parts?
Open the Cut tab, drag the two handles (or type the times) to the point where you want the break, and choose "Keep the rest": ChunkAudio saves the part before the cut and the part after it as two files. For MP3, M4A and WAV the split is a copy of the original data, so nothing is re-encoded, and the file never leaves your browser.
How do I split an audio file into multiple tracks?
Use the Split tab: enter either the length of each track (for example 5 minutes) or the number of tracks you want, and click Split. Turn on smart split to move each cut to the nearest pause so no word or beat is broken. Every track is a separate file, numbered in order, and you can download them one by one or all at once as a ZIP.
How do I break up a large MP3 into smaller files?
Drop the MP3 on chunkaudio.com/app.html, set the size of the pieces in minutes, and click Split. The MP3 is split on frame boundaries by copying, so a 5-hour, 300 MB recording works in the browser without decoding it, and the pieces keep the original quality. Free downloads are WAV; Pro keeps the pieces as MP3 with the original tags.
Can ChunkAudio separate voice from background music, or split speakers into tracks?
No. ChunkAudio splits, cuts and removes pauses; it does not separate stems or speakers. For voice and music separation you need a stem-separation tool (Demucs, Ultimate Vocal Remover, LALAL.AI); for one track per speaker you need a transcription service with speaker diarization. ChunkAudio is the right tool before that step, to cut a long recording into parts those services accept.
Ready to Split Your Audio?
No signup. No payment. Just upload, set your chunk length, and go.
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