Unit Systems in FreeCAD Explained

This video explains how unit systems work in FreeCAD. Unit system is a combination of units assigned to each available physical quantity. These are hard coded into unit systems so they can not be selected freely. The tutorial demonstrates how to change unit system for a document and how to input different units than those in the selected unit system. Selection of the default unit system is demonstrated as is setting of the precision. Special precision setting is available for the ‘Building US’ unit system. Link to the forum post with list of unit system physical quantities combination: https://forum.freecad.org/viewtopic.p... FreeCAD version used in the video: 1.1dev Angle icons created by Royyan Wijaya – Flaticon: https://www.flaticon.com/free-icons/a... Length icons created by andinur – Flaticon: https://www.flaticon.com/free-icons/l... Weight icons created by Freepik – Flaticon: https://www.flaticon.com/free-icons/w... You can support creation of future tutorials of the FCB Lounge channel by donating through Ko-Fi https://ko-fi.com/fcblounge Donate to the FreeCAD project to support the development: https://wiki.freecad.org/Donate Follow FCB Lounge channel on LinkedIn:   / fcblounge   Follow FCB Lounge channel on BlueSky: https://bsky.app/profile/tomaspolak.b... This video was created with the help of OBS: https://obsproject.com/ This video was created with the help of GIMP: https://www.gimp.org/ This video was created with the help of KDEnlive: https://kdenlive.org/ Content: 0:00 Basic information about unit systems in FreeCAD 1:32 Changing unit system for a document 2:05 Inserting units that are different than the unit system units 2:52 Changing the default unit system for new documents 3:51 Setting the precision (number of decimals) 5:30 Setting the precision for Building US unit system 6:39 Explaining units for various physical quantities in each unit system 8:07 Auto scaling of length of certain unit systems explained 10:23 Conclusion #freecad #aec #opensource #openBIM #bim