Non-Inverting Amplifier Gain
Non-inverting configuration
Enter the input voltage, Rf and Rg; gain and output appear live.
Gain & output
How to use this calculator
The non-inverting amplifier's gain is Av = 1 + Rf/Rg. The input connects directly to the non-inverting terminal, and a voltage-divider (Rf to output, Rg to ground) feeds the inverting terminal. Enter the input voltage, Rf and Rg, and the calculator shows the (positive) voltage gain and the output voltage Vout = Av·Vin.
What it means in a real circuit
For Vin = 1 V, Rf = 100 kΩ, Rg = 10 kΩ, the gain is 1 + 10 = 11 and the output is +11 V (in phase). The non-inverting configuration has very high input impedance (≈ the op-amp's own, often MΩ) and is ideal when you must not load a high-impedance source, or when you need a unity-gain buffer (Rf = 0, Rg → ∞, Av = 1). Use this for signal conditioning, buffering, and any application where phase preservation and high input impedance matter. As with the inverting stage, the output is rail-limited — an 11 V output needs a supply that can swing to at least 11 V.