Convert ZIP to ACE

A legacy application or archive workflow that accepts only ACE may require files from a ZIP archive to be repackaged. The process extracts the ZIP contents and compresses them into a new ACE archive; it does not convert the original archive in place.

What ZIP is

ZIP is a widely supported format for bundling and compressing files. Windows File Explorer, macOS Archive Utility, 7-Zip, and WinRAR can create or extract ZIP archives, which are commonly used for downloads, email attachments, and backups.

What ACE is

ACE is a proprietary archive format associated with WinAce. ACE 2.0 supports solid compression, split archives, and optional recovery records, features used in some older distribution workflows. ACE creation software is now discontinued or difficult to obtain safely, and current software support is limited.

How to create an ACE archive

1. Extract the ZIP into a folder using a current archive utility, then check that the required files are present.
2. Open the extracted files in WinAce. Select the files and folders to include, choose Add, and set the archive format to ACE. Enter a destination name ending in .ace.
3. Set any required compression, volume, or recovery options and create the archive. Use WinAce’s test function, if available, to check the result.

WinAce is discontinued. Use only a trusted copy you already have or can verify, and avoid installers from unknown download sites. WinRAR can handle ZIP files, but it cannot create ACE archives; WinRAR 5.70 and later removed ACE support entirely. Older versions may extract ACE, but are not a suitable way to create it.

No widely used, reputable online converter reliably provides ACE output. Do not upload private files to an unfamiliar service for this conversion.

Compatibility and limitations

Repacking recompresses the extracted files, so compression results can differ. ZIP-specific settings such as archive comments and encryption do not automatically carry over; apply any needed ACE settings when creating the new archive. ACE’s limited modern support can make the result difficult to open on current systems, so keep the original ZIP unless a specific legacy requirement calls for ACE. Treat untrusted ACE archives cautiously because older ACE handling software has had security vulnerabilities.