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Electrical & Electronics

Series / Parallel Resistance

Find the series or parallel equivalent of 2–20 resistors.

CALCULATOR

Enter values

USAGE

How to use it

  1. Choose the connection type.
  2. Add resistors and set each value and unit.
  3. Read the equivalent resistance instantly.

FORMULA

Calculation

Series: Req = ΣR; Parallel: 1/Req = Σ(1/R)

Example

1 kΩ ∥ 1 kΩ = 500 Ω

TECHNICAL

Technical notes

  • Every resistance must be greater than zero.