Resistor Value Calculator

Resistors are used to limit the flow of current in the Circuit. There are different values of resistor available from ohms to Giga Ohms. You can calculate the resistance value of a resistor using color coding. It consists of 4 bands. The first two bands denote the digits, the third band is the multiplier and the fourth band is a tolerance band.

Example:

Yellow-Violet-Orange-Gold

4(digit)-7(digit)-1000(10 power 3 is 1000)- 5%(Tolerance)

So the value of the resistor is 47kΩ or 4700 Ω with 5% Tolerance.