Convert ZIP to 7Z online, free
Meilleure compression — processed on our secure servers in France. Files deleted after conversion, no sign-up.
Drop your ZIP file here
or click to choose a file — conversion to 7Z
ZIP vs 7Z — technical comparison
Frequently asked questions
How to convert ZIP to 7Z?+
Drop your ZIP file in the zone above, or click to select it. The 7Z conversion starts automatically on our secure servers — no software to install.
Is converting ZIP to 7Z secure?+
Yes. ConvertLab processes your files on secure servers located in France, over an encrypted connection. They are never shared with any third party and are deleted immediately after the conversion.
Is there quality loss when converting ZIP to 7Z?+
Quality depends on the conversion settings. ConvertLab lets you adjust quality before starting.
What is the maximum file size?+
Since the conversion runs on our servers, the limit no longer depends on your device. Files up to 100 MB are accepted. With NoLimit, up to 1 GB per file (250 MB for video).