Difference Amplifier Calculator
Calculate output voltage for an op-amp difference amplifier circuit.
Circuit Parameters
Inverting Side Resistors
Non-Inverting Side Resistors
Resistors are matched (R1=R3, R2=R4) - optimal CMRR
Results
-0.5000 V
Output Voltage
1.000
Differential Gain
0.0 dB
Gain (dB)
Signal Analysis
Differential Voltage (V2-V1)-0.5000 V
Common Mode Voltage2.2500 V
CMRR (estimated)~60 dB
Formula
Vout = (R2/R1) * (V2 - V1)
For best CMRR, use matched resistors: R1=R3 and R2=R4
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.