How to calculate voltage divider output?

2R: Vout = Vin × R2/(R1+R2)
3R Tap1: Vout = Vin × (R2+R3)/(R1+R2+R3)
3R Tap2: Vout = Vin × R3/(R1+R2+R3)

For 2 resistors: Vout = Vin × R2/(R1+R2). For example, 12V with R1=10kΩ, R2=10kΩ gives Vout = 6V.

What is a 3-resistor voltage divider?

A 3-resistor divider provides two tap points. Vout depends on which tap you select between the resistors.

A voltage divider produces a fraction of the input voltage using series resistors. The classic 2-resistor formula: Vout = Vin × R2/(R1+R2).

For 3-resistor dividers, you can tap between any two resistors for different output voltages.

Two or more resistors in series to produce a fraction of input voltage.

Vout = Vin × R2/(R1+R2). Equal resistors give half voltage.

Provides two tap points with different output voltages.