Quickly calculate the equivalent resistance or the total effective resistance of the whole circuit or of one part of the circuit.

You can select:
- either 2 or 3 resistors circuit.
-either Series or Parallel configuration.

Input resistor values should be entered in Ohms.
Output equivalent resistance will be in Ohms.

If no value is entered, then it's value will be considered as zero ohms.

If you have any suggestions for new features or spot a bug please contact me, I'd love to hear from you.