Series Resistor Calculator

This tool calculates the total resistance when multiple resistors are connected end-to-end. In a series circuit, the same current passes through every resistor, and the total resistance is simply the sum of all individual values.

Use this tool to:

  • Achieve specific resistance values by combining multiple standard resistors when a single component of that value isn’t available.
  • Determine voltage drops across various points in a circuit, as each resistor will drop a portion of the supply voltage based on its value.
  • Limit current flow to a precise level for sensitive components like sensors or integrated circuits.
Resistor Values (Ω)
Equivalent Resistance

*Formula: Req = R1 + R2 + ... + Rn. Resistors in series increase total resistance and divide the total voltage.

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