File Splitter

Split large files into smaller chunks online. Free file splitter tool. Split by size or number of parts. Fast, secure, works in browser.

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About File Splitter

This tool splits large files into smaller chunks. Upload your file, choose split method (by size or number of parts), and download the chunks. Useful for email attachments, cloud storage limits, or transferring large files. All processing happens in your browser for complete privacy.

How does the file splitter work?

Upload a file, choose how to split it (by chunk size or number of parts), and click Split File. The tool will divide your file into smaller chunks and download each part sequentially. You can then transfer or store these parts separately.

What's the difference between split methods?

Split by Size: You specify the size of each chunk (e.g., 10MB), and the tool creates as many parts as needed. Split by Parts: You specify how many parts you want, and the tool divides the file evenly into that many chunks.

How do I rejoin the split files?

To rejoin split files, you need to concatenate them in order. On Windows, use: copy /b file.part001 + file.part002 + file.part003 output.file. On Linux/Mac: cat file.part* > output.file. Future updates may include a File Joiner tool.

What are the size limits?

There's no strict file size limit, but splitting very large files (over 2GB) may be slow depending on your browser and device. The maximum number of parts is 1000 to prevent excessive splitting.

Why split files?

File splitting is useful for: bypassing file size limits (email attachments, cloud storage), transferring large files over unstable connections, storing files on multiple drives, or creating backups across different media.

Are the file names important?

Yes! The split parts are named sequentially (file.part001, file.part002, etc.). Keep the original filenames and order to successfully rejoin them later.

Is my file safe?

Absolutely! All file splitting happens directly in your browser. Your file is never uploaded to any server. Everything stays private on your device.

Can I split any file type?

Yes! This tool works with any file type - documents, images, videos, archives, executables, databases, and more. The file is split at the binary level, so the type doesn't matter.