Convert CRYPT10 to CRYPT

People request this conversion when an obsolete WhatsApp release or extraction utility accepts only the unnumbered .crypt backup format. A filename change is not sufficient: .crypt10 must be decrypted and re-encrypted with the older format's scheme, if a compatible tool can perform that operation.

What the CRYPT10 format is

.crypt10 is an encrypted WhatsApp Android chat-database format. Typical files are msgstore.db.crypt10 and dated backups such as msgstore-YYYY-MM-DD.1.db.crypt10; they contain message records and related database data, while photos, videos, documents, and audio remain in separate media folders.

Older installations commonly stored these files in /WhatsApp/Databases/. Newer Android installations may use /Android/media/com.whatsapp/WhatsApp/Databases/. The database is encrypted with a WhatsApp key, so renaming msgstore.db.crypt10 to msgstore.db.crypt does not change its format or make it readable.

What the CRYPT format is

In the mobile-platform context, .crypt is an older, unnumbered WhatsApp encrypted-database format. Its only practical advantage is compatibility with software and WhatsApp releases that were built for that legacy scheme; it is not a smaller or less-encrypted version of CRYPT10.

Current WhatsApp releases use newer numbered database schemes, with the exact extension depending on the release. They generally do not create or restore the obsolete unnumbered format, so converting to .crypt rarely improves compatibility with a current phone.

How to convert CRYPT10 to CRYPT

There is no official WhatsApp export command and no reputable online converter recommended for this task. Uploading a backup exposes private conversation data, and a service would also need the matching WhatsApp key to decrypt or re-encrypt it. Use an offline tool instead.

1. Copy the original msgstore.db.crypt10 and any dated backups to separate storage. Work on the copy and preserve the original database, key, and WhatsApp media directory.
2. For a legacy-format conversion, use a compatible offline release of Omni-Crypt, formerly distributed as WhatsApp Tri-Crypt. On an Android device, select the CRYPT10 database, choose the utility's conversion or encryption operation for the unnumbered CRYPT format, and save the generated file under a new name such as msgstore.db.crypt. Exact menu names and supported source formats vary by release; verify that the output is explicitly listed as CRYPT, not merely renamed.
3. Omni-Crypt is an old, unofficial Android utility and may require root access or access to WhatsApp's key. Obtain it only from a source you can verify, keep the operation offline, and test the output on a spare installation rather than the only copy of the backup.
4. If the goal is reading or archiving messages rather than restoring an old WhatsApp installation, use the open-source desktop utility WhatsApp Viewer instead. Choose File → Open, provide the CRYPT10 database and its matching key, then export the decoded data to a supported format such as HTML or an SQLite database. WhatsApp Viewer can extract data from supported encrypted backups, but it does not turn that data into a valid legacy .crypt backup.
5. For normal WhatsApp migration, copy the backup into the database folder expected by a compatible WhatsApp release, verify the same phone number, and use WhatsApp's restore prompt. Do not rename the extension and do not install an old APK on a primary device unless its provenance and account compatibility are known.

Quality and compatibility limits

A valid CRYPT10 file is not enough for decryption. The matching WhatsApp key is normally required; an Android lock-screen PIN, account password, filename, or extension cannot replace it. On older installations the key was commonly located at /data/data/com.whatsapp/files/key, but modern Android security often prevents access without root or an appropriate authorized extraction method.

Support depends on the exact WhatsApp database revision and the converter version. A tool may open a CRYPT10 backup but fail to produce a restorable CRYPT file, and a file that converts successfully may still be rejected by a particular legacy WhatsApp build. Messages can be readable while media is missing because attachments are stored separately; copy the associated WhatsApp media folders if attachment access matters.

Do not use filename-only renaming or an unverified web service. A successful export to HTML or SQLite is a data extraction result, not a WhatsApp backup conversion, and cannot necessarily be imported back into WhatsApp.