This takes about 30 seconds. Your passwords are encrypted from the moment they enter Lockbox.
The desktop app, not the browser extension. You need the full app for export.
On Mac: menu bar > File > Export. On Windows: the three dots menu > Export.
Select "CSV" as the export format. Enter your 1Password master password to confirm.
Save it somewhere you can find it. Desktop is fine. You'll delete this file after import.
Important: The exported CSV contains your passwords in plain text. Import it into Lockbox immediately and delete the file afterwards.
If you don't have it yet, download Lockbox for iOS, Android, or Chrome.
Tap the Settings tab, then tap "Import passwords (CSV)" and choose the file you just exported. Lockbox detects which app it came from automatically.
Select the CSV you exported from 1Password. Lockbox automatically detects the format and maps the columns.
Lockbox imports the file and then tells you how many passwords were added and how many duplicates it skipped. If anything could not be imported it says so, and how many.
After import, Lockbox shows: "X passwords imported. 0 duplicates skipped."
Open your vault and scroll through. Verify your important accounts are there: email, bank, social media.
If everything looks right, delete the CSV file from your computer.
Only do this after you have verified all your passwords are in Lockbox.
Keep 1Password installed for a week after switching, just in case. Once you are confident everything is in Lockbox, uninstall 1Password.
$7.99 one-time. Import in 30 seconds. No subscription ever.