Limit Reached
Your conversions limit is reached.
Upgrade your plan to enjoy
unlimited AI-powered file conversions.
How to Convert ZIP to 7Z Online
Upload ZIP Archive
Click the upload area or drag & drop your ZIP file (Max 300MB, 2500 files).
Extract Contents
Our tool extracts all files from your ZIP archive for conversion.
Compress to 7Z
Files are re-compressed using 7Z format with advanced compression algorithms.
Download 7Z File
Download your new 7Z archive, ready for sharing or storage with maximum compression.
Related Archive Conversion Tools
Need more formats? Check our Universal Archive Converter for complete conversion options.
Free Online ZIP to 7Z Converter - Maximum Compression Instantly
While ZIP files are a ubiquitous standard for file compression, offering decent space-saving and easy sharing, there are times when you need to push the boundaries of compression to their absolute limit. This is where the 7Z format truly shines. Developed by Igor Pavlov, 7Z (7-Zip) is renowned for its superior compression ratios, often outperforming ZIP by a significant margin, especially for large files and diverse data types. When you need to drastically reduce file sizes for storage, faster uploads, or efficient sharing, converting your ZIP to 7Z is the optimal choice.
Why Convert ZIP Archives to 7Z Format?
Our free online ZIP to 7Z converter provides an effortless way to achieve this maximum compression without needing to install any software like 7-Zip. Simply upload your ZIP archive, and our powerful tool will meticulously extract its contents and then re-compress them into a highly optimized 7Z file. Beyond its exceptional compression, 7Z also boasts robust features such as strong AES-256 encryption, making it an excellent option for securing sensitive data. It also supports large file sizes and Unicode filenames, ensuring compatibility and integrity for complex archives.
This conversion process is entirely free, requires no user registration, and prioritizes your data security. Your uploaded files are processed instantly and automatically deleted from our servers after conversion, guaranteeing privacy. With support for ZIP files up to 300MB and archives containing up to 2500 individual files, our service is designed to handle substantial conversion tasks efficiently. Whether you're a developer, a student, or simply someone looking to maximize storage efficiency and enhance file security, our online ZIP to 7Z converter is your go-to solution for superior archive management.
Frequently Asked Questions About ZIP to 7Z Conversion
Yes, significantly. 7Z typically achieves much higher compression ratios than standard ZIP, often reducing file sizes by an additional 10-50% or more, depending on the content. This is due to its advanced compression algorithms like LZMA and LZMA2.
Our converter supports ZIP files up to 300MB in size and archives containing up to 2500 individual files. The output 7Z file has a maximum size limit of 1GB to ensure reliable processing and download.
Yes, absolutely. Our tool extracts the complete directory structure from your ZIP archive and recreates it exactly in the 7Z file. File timestamps and structure are preserved throughout the conversion process.
Currently, our converter processes standard ZIP files without encryption. If your ZIP file is password-protected, you'll need to extract it first using the original password, then recompress as 7Z using our tool.