Free CalculatorWiser tool

ADC Resolution Voltage Calculator

Calculate ADC least significant bit size Vref/(2^bits−1).

How to use the ADC Resolution Voltage Calculator

Calculate ADC least significant bit size Vref/(2^bits−1).

Step-by-step instructions

  1. Enter or select Reference voltage (V).
  2. Enter or select ADC bits.
  3. Tap Calculate.
  4. Review the result shown directly below the calculator.

What the inputs mean

Reference voltage (V)
Enter the value requested by this field label.
ADC bits
Enter the value requested by this field label.

Formula or calculation method

The calculator applies the standard mathematical relationship for the labeled inputs and returns the computed result automatically.

Example

Try entering realistic values for Reference voltage (V) and ADC bits, then tap Calculate to see how the result changes.

How to understand the result

Use the result as an estimate based on the values you entered. For planning decisions, double-check that the input units and assumptions match your real situation.

Tip: Keep all values in compatible units and use values from the same time period when the calculator compares two amounts.