Resistor Value Calc - This is just a quick applet I wrote to help me calculate resistor values, since I haven't memorized the stripe values. To use it, just enter the color of each band into the radio button clusters (labeled 1,2,3, and 4, moving from left to right with the metallic band on the right.) The colors are black (BLK), brown (BRN), red (RED), orange (ORN), yellow (YEL), green (GRN), blue (BLU), violet (VIO), grey (GRY), and white (WHI).  The tolerances (the metallic band) are the fourth row, and are either gold (5 percent) or silver (10 percent).