7Z (7-Zip Archive) and ZIP (ZIP Archive) are built for different jobs. 7Z is typically used for maximum compression, while ZIP is best for sending many files at once. Converting lets you open, share or upload your files wherever ZIP is expected.
How to use the 7Z to ZIP converter
- Add your 7Z filesClick “Choose Files” or drag and drop them into the box. You can add many files at once — or paste a file with Ctrl+V.
- Choose ZIP and adjust settingsZIP is selected automatically. Optionally open Settings to change output options.
- Convert and downloadPress “Convert”. Your ZIP files appear instantly — download them one by one or all together as a ZIP.
7Z vs ZIP
7Z 7-Zip Archive
7Z offers some of the best compression ratios available and is open source, though Windows and macOS need an extra app to open it.
- Compression
- LZMA/LZMA2
- Features
- High compression ratio
- Origin
- 1999, Igor Pavlov
- Best for
- Maximum compression
ZIP ZIP Archive
ZIP is the most compatible archive format. Windows, macOS, Android and iOS can open it without any extra software.
- Compression
- Deflate
- Features
- Built into Windows & macOS
- Origin
- 1989, PKWARE
- Best for
- Sending many files at once
Why use ConvertMathly?
Files are processed on your device and never uploaded. Close the tab and they are gone.
No account, no daily cap, no queue and no watermark — convert as much as you want.
No waiting for uploads or downloads: results are ready as fast as your device can process them.
Windows, Mac, Linux, Chromebook, iPhone and Android — any modern browser, nothing to install.
Frequently asked questions
How do I convert 7Z to ZIP?
Add your 7Z files above, make sure ZIP is selected and press Convert. The ZIP files are ready to download a few seconds later — no installation or account required.
Is there a file size or daily limit?
No. Since everything runs locally, there are no daily caps, queues or file size limits beyond what your device can handle.
Are my 7Z files uploaded to a server?
No. ConvertMathly converts files entirely inside your web browser using JavaScript and WebAssembly. Your files never leave your computer or phone, which makes it safe for private photos and documents.
Can I convert multiple 7Z files at once?
Yes — add as many files as you like. They are converted one after another and you can download everything in a single ZIP.