You can delete your account from within WhatsApp. Deleting your account is an irreversible process, which we can't revert even if you perform it by accident.

To delete your account:

1. Press Options > Settings > Account > Delete my account.
2. Select your country code and enter your phone number.
3. Press Delete > DELETE.

Deleting your account will:

• Delete your account from WhatsApp.
• Delete your chat history on your phone.
• Delete you from all your WhatsApp groups.

If you delete your account:

• You can't regain access to your account.
• It may take up to 90 days from the beginning of the deletion process to delete your WhatsApp information. Copies of your information may also remain after the 90 days in the backup storage that we use to recover in the event of a disaster, software error, or other data loss event. Your information isn't available to you on WhatsApp during this time.
• It doesn't affect your information related to the groups you created or the information other users have relating to you, such as their copy of the messages you sent them.
• We may retain certain log data in our databases even after you delete your account, but such data will be disassociated from any identifying information such that it can no longer be linked to your account. To do this, on a regular basis, we wipe certain identifying information from this log data, and we replace any instance of your account ID with a replacement identifier which cannot be linked back to your account once it is deleted.
• We may also keep your information for things like legal issues, terms violations, or harm prevention efforts.
• Please refer to our Privacy Policy for more information.
• Your information shared with other Facebook Companies will also be deleted.

Related resources:

Learn how to delete your account on: Android | iPhone