U.S. Cybersecurity and Infrastructure Security Agency · reviewed 2026-10-11
What this source supports: Use unique passwords, a password manager, and multifactor authentication to protect accounts.
Source limit: Account recovery steps and available security options differ by provider. Use the provider's own current instructions.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
Limits
This guide counts and budgets from your list. It does not test a password or access an account.
Account recovery steps and available security options differ by provider. Use the provider's own current instructions.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Common questions
What does the App compute?
Turn a household account list into the passwords still to change, the time needed, and the multifactor gap.
What does the App not do?
This App counts and budgets from your list. It does not store a password, test one, or sign in to anything.
Where do the numbers come from?
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
Before you start
Open the linked source page and keep it beside you.
Gather the values the App asks for:
Accounts on the list.
Already in a password manager.
Accounts with multifactor authentication.
Minutes per password change.
Set aside ten quiet minutes; rushed numbers are the main error this guide prevents.
Free Companion App
The App computes the worked example with your own numbers, in your browser.
APP 1
Family Password Refresh Plan
Turn a household account list into the passwords still to change, the time needed, and the multifactor gap.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.