Voltage Divider Calculator
Enter any three values, the fourth calculates automatically (you can also enter your desired output voltage!).
Units can be changed at any time.
Equations:
Vout = Vin * (R2 / (R1 + R2))
Vin = Vout * (R1 + R2) / R2
R1 = R2 * (Vin - Vout) / Vout
R2 = R1 * Vout / (Vin - Vout)
Vout = Vin * (R2 / (R1 + R2))
Vin = Vout * (R1 + R2) / R2
R1 = R2 * (Vin - Vout) / Vout
R2 = R1 * Vout / (Vin - Vout)