MFA Security Score Calculator

Calculator Inputs

Organization or Program Name

Total Users

MFA Enabled Users

Privileged Users

Privileged Users with MFA

Phishing-Resistant Users

SMS MFA Users

Push MFA Users

TOTP App Users

Hardware Key or Passkey Users

Active MFA Exemptions

Recovery Coverage (%)

Policy Enforcement Coverage (%)

Failed MFA Prompt Rate (%)

High-Risk Apps Protected (%)

Third-Party Identity Coverage (%)

Remembered Device Days

Plotly Graph

Example Data Table

Scenario	Total Users	MFA Enabled	Privileged MFA	Phishing Resistant	Exemptions	Estimated Score Trend
Baseline enterprise rollout	1000	920	78/80	340	12	Strong
Improved passkey adoption	1000	970	80/80	520	4	Excellent
Legacy-heavy environment	1000	710	56/80	120	34	Weak

Formula Used

This calculator builds a weighted score from MFA coverage, privileged account protection, phishing-resistant adoption, policy enforcement, recovery readiness, app protection, third-party identity coverage, and authentication method quality. It then subtracts penalties for exemptions, failed prompt rates, and long remembered-device windows.

Coverage Score: (MFA Enabled Users ÷ Total Users) × 35
Privileged Score: (Privileged MFA Users ÷ Privileged Users) × 20
Phishing-Resistant Score: (Phishing-Resistant Users ÷ MFA Enabled Users) × 12
Enforcement Score: (Policy Enforcement Coverage ÷ 100) × 8
Recovery Score: (Recovery Coverage ÷ 100) × 5
App Protection Score: (High-Risk Apps Protected ÷ 100) × 5
Third-Party Coverage Score: (Third-Party Identity Coverage ÷ 100) × 5
Method Strength Score: Weighted method index × 10, capped at 10
Method Index: [(SMS × 0.35) + (Push × 0.75) + (TOTP × 0.85) + (Hardware/Passkey × 1.00)] ÷ MFA Enabled Users
Bypass Penalty: Min[6, ((Exemptions ÷ Total Users) × 100 × 0.20)]
Failure Penalty: Min[4, Failed MFA Rate × 0.20]
Remembered Device Penalty: 0.5 to 4.5 based on trust duration
Final Score: Positive Subtotal − Total Penalties, limited to 0–100

How to Use This Calculator

Enter the total number of active users in scope.
Add how many users have MFA enabled today.
Enter privileged account counts and their MFA coverage.
Provide adoption numbers for each MFA method type.
Estimate the number of phishing-resistant users.
Supply coverage percentages for recovery, enforcement, risky apps, and third-party identity paths.
Enter active exemptions, failed prompt rate, and remembered-device duration.
Submit the form to see the score, rating, component breakdown, recommendations, and graph.
Use the CSV and PDF buttons to export results for audits or security reviews.

Frequently Asked Questions

1. What does this MFA security score represent?

It estimates how strong your MFA program is across adoption, privileged access, resistance to phishing, enforcement quality, and operational exceptions. A higher score usually means lower authentication risk and better protection maturity.

2. Why are privileged accounts weighted more heavily?

Compromised privileged accounts create outsized business risk. Because of that, full MFA coverage for administrators, operators, and highly sensitive accounts meaningfully increases the overall security score.

3. Why do phishing-resistant methods improve the score?

Hardware keys and passkeys resist replay and prompt-based phishing better than weaker methods. The calculator rewards those methods because they lower common attack paths against accounts.

4. Why is SMS scored lower than other methods?

SMS still adds protection, but it is generally more exposed to interception, social engineering, and number-porting attacks. The calculator therefore gives stronger methods a higher quality weight.

5. What counts as an MFA exemption?

An exemption is any account, workflow, or system path allowed to bypass MFA. Temporary break-glass accounts, legacy systems, and unmanaged exceptions should all be tracked because they reduce overall assurance.

6. How often should I recalculate the score?

Monthly reviews are a solid baseline. Recalculate after major identity changes, new app integrations, administrator turnover, policy changes, or large onboarding waves to catch security drift early.

7. Can this calculator support audits or executive reporting?

Yes. The breakdown table, recommendations, CSV export, PDF export, and chart make it useful for control reviews, board summaries, security roadmaps, and program benchmarking discussions.

8. Is a high score enough by itself?

No. MFA is one important control, not the whole identity strategy. You still need strong device trust, least privilege, monitoring, conditional access, recovery controls, and user awareness.