Sizer 2025

Sizer 2025 (Version 12) was a major release on June 23, 2025 which included the following:

• Full I-joist design, including bearing design, web holes, partial loading, composite action, and cantilever reinforcement.
• CSA O86 update to the design properties (G, fb, fc, ft, E) of Hem-Fir members.
• Numerous minor bug fixes and small improvements.

A complete list of changes is found in Sizer Features and Changes .