Voltage Divider Calculator

Voltage divider calculator: calculates the voltage drops on each resistor load, when connected in series.

Enter total voltage supply and press the Calculate button:

 

Enter input:

         
  Total voltage: VT = Volts [V]  
  Resistance of first load: R1 = Ohms [Ω]  
  Resistance of second load: R2 = Ohms [Ω]  
  Resistance of third load:

(optional)

R3 = Ohms [Ω]  
             
         
 

Result:

         
  Voltage drop in R1: V1 = Volts [V]  
  Voltage drop in R2: V2 = Volts [V]  
  Voltage drop in R3: V3 = Volts [V]  
             

Voltage divider rule

For a DC circuit with constant voltage source VT and resistors in series, the voltage drop Vi in resistor Ri is given by the formula:

V_i=V_T\: \frac{R_i}{R_1+R_2+R_3+...}

 

Voltage divider ►

 


See also

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