Wheatstone Bridge Calculator

Calculate unknown resistance, bridge balance condition, and output voltage for Wheatstone bridge circuits.

Known resistance in arm 1.
Ω
Known resistance in arm 2.
Ω
Known resistance in arm 3.
Ω
Unknown resistance or measured resistance.
Ω
Excitation voltage across the bridge.
V

Results

Bridge Output Voltage-mV
R4 for Balance-Ω
Balance Status-
Sensitivity-mV/Ω
References: Hayt — Circuit Analysis; Measurement Standards