Op-Amp Voltage and Gain Calculator

The Op Amp Voltage and Gain Calculator is an easy-to-use tool for analyzing operational amplifier circuits. It calculates the output voltage, inverting gain, and non-inverting gain based on the input parameters. Simply enter the values of V1, V2, Vp, Vn, and the resistor values R1, R2, R3, and R4, and the calculator will instantly provide accurate results. This tool is suitable for both professional engineers and beginners learning op amp circuit design.

Input Parameters
KOhms
KOhms
KOhms
KOhms
V
V
V
V
Outputs
Output is clipped.
V
Vout/V1
Vout/V2
Op-Amp diagram

Introduction

Op Amp Gain | Details Calculations Formulas

OP AMP Calculator Overview

OP Amplifier calculator is an opamp calculation tool designed by Utmel Electronic, which is one of the best Electronic Components distributors. And with the help of this OP AMP Calculation tool, you can get the amplifier output power and Gain for an operational Amplifier. So OP AMP Calculator is also named OP AMP Gain Calculator (operational amplifier gain calculation tool) or OP AMP Voltage Calculator. And this OP AMP Calculator can work with not only inverting amplifier gain, but also non inverting amplifier gain. If you would like to calculate the values for differential amplifier, please refer to a differential amplifier calculator.

OP Amp Gain Formula

Maybe you have the question about how to calculate gain. The op amp equations are as the following:

Vout=A×VinputV_{out} = A \times V_{input}

And the above operational amplifier formulas are suitable for non inverting and inverting operational amplifier.

Inverting Op-Amp Gain

The op amp gain equation for an inverting op-amp is:

A=−R2R1A = -\frac{R_2}{R_1}

Non-Inverting Op-Amp Gain

The gain of the non inverting op-amp can be determined using the Operational Amplifier Formula for amp:

A=1+R2R1A = 1 + \frac{R_2}{R_1}

Frequently Asked Questions

What parameters do I need to input for the calculation?

You need to input the resistor values (R1-R4 in kΩ), input voltages (V1 and V2 in volts), and the op-amp's power supply voltages (Vp and Vn in volts). These parameters allow the tool to calculate the output voltage and gains accurately.

Why does the output voltage sometimes show "Output is clipped"?

This occurs when the calculated Vout exceeds the op-amp's supply voltages (Vp or Vn). Real op-amps cannot output voltages beyond their supply rails, so the signal is clipped at ±Vp/Vn. Ensure your input signals and resistor ratios stay within the supply limits.

How are the inverting and non-inverting gains calculated?

Inverting Gain: Gain = -R2/R1 (negative due to signal inversion). Non-Inverting Gain: Gain = 1 + R2/R1. The tool uses these formulas to compute gains based on your resistor values.

Can I use this calculator for differential amplifier configurations?

No, this tool is designed for basic inverting/non-inverting op-amp circuits. For differential amplifiers (e.g., using R3 and R4), refer to a dedicated differential amplifier calculator, as the formula involves additional resistor ratios.

Why is the non-inverting gain formula different from the inverting gain?

In a non-inverting configuration, the input signal is applied directly to the op-amp's non-inverting terminal, resulting in a positive gain (1 + R2/R1). For inverting setups, the signal is fed through resistors to the inverting terminal, causing phase inversion and a negative gain (-R2/R1).

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