AutoCAD Scale Factors Charts Here are some simple charts to help you convert drawing scale to scale factor, for working in CAD Convert your PDF to AutoCAD Architectural Scales Drawing Scale Scale Factor Viewport Scale Decimal Scale 1/16″ = 1′-0″ 192 1/192xp .0625″ = 1′-0″ 3/32″ = 1′-0″ 128 1/128xp .09375″ = 1′-0″ 1/8″ =Continue reading →