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 Content
Our tool extracts all files from your ZIP archive for conversion.
Compress to 7Z
Files are re-compressed using the 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 other formats? Check out our Universal Archive Converter for comprehensive conversion options.
Free Online ZIP to 7Z Converter - Instant Maximum Compression
While ZIP files are a universal standard for file compression, offering decent space savings and easy sharing, there are times when you need to push compression limits to their absolute maximum. This is where the 7Z format truly shines. Developed by Igor Pavlov, 7Z (7-Zip) is renowned for its superior compression ratios, often outperforming standard ZIP significantly, 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 a straightforward way to achieve this maximum compression without the need to install software like 7-Zip. Simply upload your ZIP archive, and our powerful tool will meticulously extract its contents, then re-compress them into a highly optimized 7Z file. Beyond its exceptional compression, 7Z also offers robust features like strong AES-256 encryption, making it an excellent option for securing sensitive data. It also supports large files and Unicode filenames, ensuring compatibility and integrity for complex archives.
This conversion process is completely free, requires no user sign-up, and prioritizes your data's security. Your uploaded files are processed instantly and automatically deleted from our servers after conversion, ensuring 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, 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 generally 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 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 within the 7Z file. Timestamps and file structure are preserved throughout the conversion process.
Currently, our converter processes standard, unencrypted ZIP files. If your ZIP file is password-protected, you will need to extract it first using the original password, and then re-compress it to 7Z using our tool.