Is there a calculator to figure out what the equivalent screen size would be in 16:9 ratio on a 21:9 monitor? : r/ultrawidemasterrace
Aspect Ratio Calculator - 4:3, 16:9, 21:9 (Ratio calculator)
Amazon.com : Casio Graphing Calculator with Large 21-Character x 8-line Display with Dual Screen Capability. 62K RAM with USB - White - New - Retail - FX-9750GIIWE-L-IH : Office Products