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Scoping guide

CMMC and NIST 800-171 Tools for Small Defense Contractors

Free scoping tools, plain-English guides and vendor comparisons for small defense contractors working through CMMC and NIST SP 800-171.

In scope
Laptops that open CUI
The file share holding drawings
Email that receives CUI
The badge reader on the shop door
Out of scope
The marketing website
Payroll with no CUI in it
A printer that never prints CUI
Phones that never touch CUI
Fig. 01
Mezzotint of a folder with a purple cover sheet beside a machined part on a shop bench
A folder with its cover sheet and a part with its routing tag: the two things a boundary is drawn around.

Free tools for the work itself

Checklists, worksheets and calculators that run in your browser. No account, no sign-up.

All 11 tools
Scoping & CUI

Which CMMC level do I need?

Five questions on your information, clauses and role give the CMMC level, the assessment type and what applies today.

Assessment & SPRS

SPRS score calculator

Tick the 800-171 requirements you have not met: your SPRS score from 110, the 88 line and which gaps may go on a POA&M.

SSP, POA&M & policies

POA&M template builder

Build a CMMC POA&M row by row, checked against 32 CFR 170.21: the 88-point minimum, 1-point gaps only, 180-day closeout.

Scoping & CUI

CMMC scoping worksheet

List every asset, sort it into the 32 CFR 170.19 Level 2 categories, and export the inventory for your SSP.

How scoping works

1 Find the CUI

List where controlled information arrives, where it is kept and where it goes next.

Is it CUI?

Browse by topic

Scoping & CUI
Mezzotint of a roll of floor tape beside a machined part

Scoping & CUI

Find where CUI lives in a small shop, draw the boundary around it, and sort every laptop, share and machine into or out of scope.

4 tools, 7 guides, 3 comparisons

Assessment & SPRS
Mezzotint of an inspection tag tied to a machined part

Assessment & SPRS

Self-assessments, the SPRS score and getting ready for an assessor, worked through in plain English.

4 tools, 12 guides, 4 comparisons

SSP, POA&M & policies
Mezzotint of a folder standing in a desk file holder

SSP, POA&M & policies

The system security plan, the plan of action and milestones, and the policies behind them: what goes in each and how to keep them current.

3 tools, 3 guides, 2 comparisons

Vendors & cloud
Mezzotint of a padded envelope on a crate lid

Vendors & cloud

Cloud suites, email and file sharing, enclaves and service providers, compared on what the rule asks of them.

2 guides, 8 comparisons

Start here

Draw the line before the assessor does.