Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Supply voltage (V)

Required number input.

R1 (Ω)

Required number input.

R2 (Ω)

Required number input.

R3 (Ω)

Required number input.

R4 (Ω)

Required number input.

Compute the signed differential output voltage of a Wheatstone bridge. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Bridge output (V)

The resulting bridge output returned as a number.

• Bridge balance and output equations assume defined resistor placement, excitation, load, and small changes where linearization is used. Tolerance, lead resistance, self-heating, temperature coefficients, amplifier bias, and common-mode range affect accuracy.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

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  Compute the signed differential input voltage as V+ minus V-.