Op Amp Gain Calculator

Select Amplifier Type Non-Inverting Amplifier Inverting Amplifier

Resistor R1 Ohms (Ω) Kilo-ohms (kΩ) Mega-ohms (MΩ)

Resistor R2 Ohms (Ω) Kilo-ohms (kΩ) Mega-ohms (MΩ)

Calculate Gain

This calculator helps you determine the gain of an operational amplifier (op-amp) based on the resistor values in either a non-inverting or inverting configuration.

Example Calculations

Non-Inverting Amplifier: If \( R_1 = 1kΩ \) and \( R_2 = 4kΩ \):

Gain = 1 + (R2 / R1) = 1 + (4000 / 1000) = 5

Inverting Amplifier: If \( R_1 = 1kΩ \) and \( R_2 = 4kΩ \):

Gain = - (R2 / R1) = - (4000 / 1000) = -4