Here’s the spreadsheet that’s been the secret to my on-target project estimation, project bids, and responsive project management for 15 years.  Would it ever be nice to find a low-cost software product that supports three-point estimates!  (Let me know if you know of one.)  For now, you’re welcome to copy and use this Google Sheet.  You’ll find instructions as well as the terms of use on the second page of the workbook.  Please respect the open-source license: you’re welcome to copy and use it, but you may not sell it, and the attribution to me with the e-mail address must remain intact.  With that, have at it, here it is!

I explained in Growth through Governance how to use the workbook, but if you have a question as you go along, please feel free to share it here.  I’d also love to hear about your experiences getting into three-point project estimates.

• See this post for my best effort explaining how this works without mathematical equations.
• See this post for example Project Management Spreadsheet workbooks for the High Holiday ushers deliverable that is planned in Chapter 8 of Growth through Governance.