Non Inverting Op Amp Calculator
Design a non-inverting amplifier stage with high input impedance.
About Non Inverting Op Amp Calculator
The non-inverting configuration presents the op-amp’s own very high input impedance to the source, making it ideal for buffering. Its minimum gain is one, which is the voltage-follower case. Voltage followers are used to drive low-impedance loads from high-impedance sources without loading them, which a resistive divider cannot do.
Formula
Non Inverting Op Amp
A = 1 + R_f ÷ R_g
- unity gain
- With no feedback resistor the stage becomes a voltage follower with a gain of one
Worked example
With the default values below, Non Inverting Op Amp Calculator returns Gain of 10.0000. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Ground-side resistorminimum 0.01 ohm
- 1,000 ohm
- Feedback resistorminimum 0 ohm
- 9,000 ohm
- Input voltageminimum -50 V
- 1 V
- Supply railminimum 0.1 V
- 15 V
Results
- Gain
- 10.0000
- Output Voltage
- 10.00000 V
- Gain
- 20.000 dB
- Maximum Input Before Clipping
- 1.35000 V
- Configuration
- Standard non-inverting amplifier
Step by step
- 1Values used
- 2Non Inverting Op Amp
- 3Gain= 10.0000
- 4Output Voltage= 10.00000 V
- 5Gain= 20.000 dB
- 6Maximum Input Before Clipping= 1.35000 V
- 7Configuration= Standard non-inverting amplifier
Assumptions and limits
- The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax or compounding frequency into account.
- Figures are rounded for display to 5 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Non Inverting Op Amp calculated?
A = 1 + R_f ÷ R_g The non-inverting configuration presents the op-amp’s own very high input impedance to the source, making it ideal for buffering. Its minimum gain is one, which is the voltage-follower case.
Why does Non Inverting Op Amp matter?
Voltage followers are used to drive low-impedance loads from high-impedance sources without loading them, which a resistive divider cannot do.
What values do I need to enter?
This calculator takes 4 inputs: Ground-side resistor, Feedback resistor, Input voltage, Supply rail. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.