CalcTown has developed a list of Op Amp calculators that cover most of the popular op amp configurations. An op-amp (operational amplifier) is a voltage amplifier with a differential input i.e it has inputs of opposite polarities. The gain of the op amp depends of the selected configuration. Below is a list of op amp calculators which calculate the gain of the circuit based on the values that you enter.

- Non-inverting Gain for ideal and non-ideal Op-Amp Calculator
- Op-Amp voltage to current converter
- Op-Amp Log Amplifier Calculator
- Output of a Summing Op-Amp calculator
- Op-Amp differential Voltage Amplifier and Common Mode Rejection ratio (CMRR) Calculator
- Op-Amp Current to voltage converter
- Non-Inverting Operational Amplifier Resistor Calculator
- Inverting Op-Amp Resistor Calculator
- Inverting Gain for ideal and non-ideal Op-Amp Calculator
- Gain and Input Resistance of an Ideal Op-Amp circuit with a T-network