Electronics 2000

Weatstone Bridge Calculator

The first of these calculators will calculate the fourth resistor value in a Wheatstone Bridge given the other three resistor values and the bridge being balanced. The second calculator will find the voltage across the bridge given the resistor values and supply voltage. More information about the Wheatstone Bridge can be found in the technical data section. The diagram below shows the notations used by the calculators:

Wheatstone Bridge showing notation used in calculators

Calculate R4 for Balanced Bridge from R1 to R3:

Enter R1:
      
Arrow Arrow R4 =

Ohms
Enter R2:
      
Enter R3:
      

Calculate Vbridge from R1 - R4 and Supply Voltage:

Enter R1:
      
Arrow Arrow Vbridge =

Volts

Enter R2:
      
Enter R3:
      
Enter R4:
      
Enter V: