Resistors are normally supplied in ranges that have 6, 12, 24, 48, 96 or 192 values per decade. RVal helps you select the best values to produce a given ratio or difference, to connect in series or parallel to produce an exact value, the nearest preferred value to any given value, find the preferred value required in parallel with an existing resistance to produce a desired value or display a list of the values in any range (inc. user ranges).

Coding and decoding of color coded resistors and capacitors with 4 and 5 bands.
Colors are decoded to value, tolerance and maximum working voltage (capacitors) of the component. Inversely, entering value and tolerance displays the color codings. Option to compute the resulting value of a series or parallel resistor or capacitor network with 2 or 3 components. No installation required.