Free tool
Documentation debt calculator
What does undocumented code cost your team every year? Enter your file count, engineer cost, and onboarding rate, and see the annual drag as a number. Free, no signup, nothing leaves your browser.
Your codebase
The assumptions behind the math
- Each undocumented file costs about 2 hours a year of re-derivation: someone reads the code, asks who wrote it, reconstructs what the docs would have said.
- Each new engineer loses about 20 hours onboarding in poorly documented code, on top of normal ramp-up.
- Both numbers are deliberately conservative. They are assumptions, not measurements of your team.
Your numbers
- Maintenance drag
- $0
- Onboarding tax
- $0
- Hours lost per year
- 0 h
Estimated annual doc-debt cost
$0
Over 5 years: $0
Engagement: $79 founding rate ·$149 standard
Payback: an engagement pays for itself in about— of avoided doc-debt drag (— at the founding rate).
An estimate, not a quote. Assumptions above; your team may differ. It exists to put a number on the conversation, not to end it.
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