This tool converts a digital value at the output of a **Analog-to-Digital Converter** to its equivalent input voltage value.

To use the calculator, enter

- ADC Reference voltage
- Number of Bits in the ADC (e.g. 8 bits)
- Digital Input (e.g. 10101)

**Example Calculation**

**8-bit ADC**

For a reference voltage of 5 Volt, digital word 0101010 output from a 8-bit ADC, the analog input voltage is 0.82 Volt. If the digital output is 11111111, the input is at the max value of 5 Volt.

**12-bit ADC**

For the same reference voltage of 5V, digital word 110101001111 from a 12-bit ADC gives an input voltage of 4.16 Volt.