Skuti Science Free scientific calculators & converters

Voltage Divider Calculator

Output voltage, current and power of a resistive voltage divider, with optional load resistance.

Results

Output voltageβ€”
Divider currentβ€”
Ratio Vout/Vinβ€”
Power in dividerβ€”

How to use the Voltage Divider Calculator

  1. Enter or select: Input voltage, R1 (top), R2 (bottom).
  2. Fill in what you know of: Load resistance (optional) β€” leave the unknown empty.
  3. The results (Output voltage, Divider current, Ratio Vout/Vin, Power in divider) are calculated instantly as you type.
  4. Use β€œCopy link” to share the calculation with the same input values.

Formula

  • V_out = V_in Β· R2/(R1 + R2)