Resistor Value Calculator

Below is an interactive solution for establishing the value of resistors from their color coding and markings for the interactive version follow the link http://resistor.cherryjourney.pt/

This gizmo is from the book/blog From Practical Electronics For Makers (Part 1 of N) about practical electronics for beginners and the rest. Is an excellent starting point for those interested in the subject. It is published in a series of chapters starting with the above link. I expand on the book/blog in another post