Project Timeline Calculator
Optimistic estimate → realistic deadline.
Result
Padded dev-days108
Calendar weeks15.1
vs raw estimate126% of estimate
Project Timeline Calculator — FAQs
Why pad estimates?
Everything takes longer (Hofstadter's law) — meetings, reviews, blockers and integration eat ~40% of raw dev days, and devs rarely parallelise cleanly.
Why do software projects run late?
Optimism bias, unplanned integration work, unclear scope and communication overhead that grows with team size.
Need a Custom Tool Built?
We build calculators, estimators and internal tools for businesses in the UK and North America.
Get a QuoteEmbed this Project Timeline Calculator on your site
Free to use — paste this snippet into any webpage. It auto-resizes and includes a small attribution link. Add ?theme=dark to the iframe URL for dark mode.