Potentiometer / Voltage Divider Calculator
Estimate Vout, currents and pot power at any wiper position. Works with a load resistor (RL).
%
Enter percentage (0% = top end, 100% = bottom end). You can also set bottom segment ohms directly below.
If you fill bottom ohms, it overrides % position and calculates top = Rpot – Rbottom.
Notes: For accuracy with load, calculator models the pot bottom node in parallel with RL. Currents: Itop=(Vin−Vout)/Rtop, Ibottom=Vout/Rbottom, Iload=Vout/RL. Pot power = Ptop + Pbottom.