Security MFA enrollment coverage calculator

Calculate nonexempt eligible accounts and counted-method coverage among nonexempt accounts with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use nonexempt eligible accounts and counted-method coverage among nonexempt accounts to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Eligible accounts: ID, accepted exception expiry inclusive or none
A,none B,none C,2026-10-31
Enrollment records: ID, account, method label, enabled yes/no; or none
M1,A,webauthn,yes M2,B,password,yes M3,C,webauthn,no M4,D,TOTP,yes
Methods counted by supplied policy, joined by |
webauthn|TOTP
Audit date
2026-10-20
Nonexempt eligible accounts
2
Counted-method coverage among nonexempt accounts (%)
50
Nonexempt accounts without an enabled counted method
B
Accounts with current supplied exceptions
C
Nonexempt accounts with only enabled uncounted methods
B
Enrollment account IDs absent from eligibility inventory
D

Try another scenario

Eligible accounts: ID, accepted exception expiry inclusive or none
A,none B,none C,2026-10-31
Enrollment records: ID, account, method label, enabled yes/no; or none
M1,A,webauthn,yes M2,B,password,yes M3,C,webauthn,no M4,D,TOTP,yes
Methods counted by supplied policy, joined by |
webauthn|TOTP|password
Audit date
2026-10-20
Nonexempt eligible accounts
2
Counted-method coverage among nonexempt accounts (%)
100
Nonexempt accounts without an enabled counted method
None
Accounts with current supplied exceptions
C
Nonexempt accounts with only enabled uncounted methods
None
Enrollment account IDs absent from eligibility inventory
D
Calculation method

Calculation method

Nonexempt eligible accounts

Eligible accounts without an unexpired explicitly supplied exception.

Counted-method coverage among nonexempt accounts (%)

At least one enabled method named by the supplied policy/nonexempt accounts×100.

Nonexempt accounts without an enabled counted method

Missing qualifying enrollment remains uncovered.

Accounts with current supplied exceptions

Exception expiry≥audit, regardless of actual enrolled methods.

Nonexempt accounts with only enabled uncounted methods

Uncovered accounts with at least one enabled method outside the supplied counted set.

Enrollment account IDs absent from eligibility inventory

Deduplicate unknown enrollment accounts; exclude them from the eligible denominator.

Symbols and units
a
Eligible accounts: ID, accepted exception expiry inclusive or none
b
Enrollment records: ID, account, method label, enabled yes/no; or none
c
Methods counted by supplied policy, joined by |
d
Audit date

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • An enrollment-inventory audit against explicitly supplied method labels and accepted exceptions. It does not validate authenticator strength, prove MFA enforcement or approve an exception; no account settings are changed.
Are these inputs private?

These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.

Further reading

NIST SP 800-53: background for inventory, access, audit and contingency controls; worksheet algorithms and rules are explicitly supplied, not NIST compliance tests ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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