⏱️ This takes ~1–2 hours for a full conversion.
MasterFormat is a copyrighted standard. CSI sells the official PDF, the hardcover book, and licenses the digital data to software providers. If you search for a free Excel download, you will find many outdated versions (1995, 2004) or user-generated spreadsheets that contain typos and missing sections. csi masterformat 2020 excel download