Op-Amp Gain Calculator
Operational amplifiers are the foundation of analog electronics, used in sensors, filters, signal conditioning, instrumentation and more.
This Op-Amp Gain Calculator allows you to quickly compute gain for both inverting and non-inverting configurations simply by entering resistor values.
Perfect for circuit design, troubleshooting, and academic use.
Inverting & Non-Inverting Amplifier Gain Tool
Choose Inverting or Non-Inverting configuration.
Enter Rin (input resistor) and Rf (feedback resistor).
Click Calculate Gain.
The calculator instantly displays the amplifier gain based on standard op-amp formulas.
🧭 How to Use
FAQ
Q1. What is an op-amp gain?
A. It is the ratio of output voltage to input voltage based on resistor selection.
Q2. Why does inverting gain have a negative sign?
A. Because the output is 180° out of phase with the input.
Q3. What resistor values should I choose for stable gain?
A. Common design practice uses resistors between 1 kΩ to 100 kΩ.
Q4. Does this calculator include real op-amp limitations?
A. No — it calculates ideal gain. Real op-amps have bandwidth, slew rate, and saturation limits.