ZIP to 7Z converter
Convert ZIP files to 7Z with encrypted uploads and automatic deletion. Open archive format with very high compression ratios.
ZIP → 7Z is queued for rollout
Image, spreadsheet, document and media conversions are live today. This pair needs our office engine, which is next on the roadmap.
How it works
Drop your file
Drag a ZIP file in, or click to browse. No account needed to try it.
We convert it
Encrypted upload, converted to 7Z in our archive pipeline.
Download the result
Grab your 7Z file immediately, or find it later in your dashboard.
Why convert ZIP to 7Z?
Both ZIP and 7Z use lossless compression, so the conversion mainly changes compatibility, not quality. The main reason to convert ZIP to 7Z is compatibility: 7Z extracts with the archive tool already built into your OS, while ZIP doesn't always. If you're sharing a file with someone else, sending it to a tool that expects a specific format, or archiving it for the long term, 7Z is usually the safer target.
Format comparison
| ZIP | 7Z | |
|---|---|---|
| Extension | .zip | .7z |
| MIME type | application/zip | application/x-7z-compressed |
| Compression | lossless compression | lossless compression |
| Category | archive | archive |
Your file, handled carefully
Uploads are encrypted in transit and at rest, processed in an isolated job, and deleted on the schedule you choose — as fast as immediately. We don't index, search, or share files between accounts. Read the full security model →
Frequently asked questions
Is converting ZIP to 7Z free?
Yes — the first 50 conversions every month are free on any plan, including ZIP to 7Z.
Will I lose quality converting ZIP to 7Z?
7Z is open archive format with very high compression ratios. We use the highest-quality encoder settings by default so visual or data loss is minimized.
Do you keep a copy of my file?
No, not by default. You choose a retention window at upload — immediate, 1 hour, 24 hours or 7 days — and the file is permanently deleted after that.
What is ZIP?
The most widely supported archive format.
What happens if a conversion fails?
You get a clear error message and the job is marked failed in your history — we never silently drop a file. Retry is one click, and nothing is charged against your quota for a failed job.